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Eheim Adjustable 100 Air Pump

4.4 4.4 out of 5 stars 1,093 ratings
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Was: £28.95
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Size Name: 100
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Purchase options and add-ons

Colour Black
Brand Eheim
Material Plastic
Item weight 0.78 Kilograms
Power source Corded Electric

About this item

  • Continuous ultra-quiet operation
  • Air flow level adjustable on pump
  • Air flow level and appearance adjustable on Eheim diffusor
  • Model number: 3701110

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Product description

Product Description

There are three models with a pump outlet from 100, 200 (2 x 100) and 400 (2 x 200) l/h, on which the smallest model has one and the two larger ones both have two individually adjustable air outlets. And they come equipped with one or two EHEIM diffusors. The air flow can be regulated at each outlet on the pump and also on each diffusor. This allows you to set your own individual bubble effect.  Eheim Product Number 3701110

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ADJUSTABLE AIR PUMP 100

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Eheim Adjustable 100 Air Pump
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Price-3% £27.95
Was: £28.95		£39.99-20% £15.99
RRP: £19.99		£26.17£44.99£38.99
Delivery
Get it as soon as Tuesday, Mar 4
Get it as soon as Tomorrow, Mar 3
Get it as soon as Tomorrow, Mar 3
Get it as soon as Tomorrow, Mar 3
Get it as soon as Tomorrow, Mar 3
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Customer Ratings
4.44.4 out of 5 stars1,093
4.44.4 out of 5 stars81
4.44.4 out of 5 stars1,842
4.24.2 out of 5 stars517
4.64.6 out of 5 stars438
4.44.4 out of 5 stars164
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Customer reviews

4.4 out of 5 stars
1,093 global ratings

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Customers say

Customers find the air pump quiet and well-built. They say it works brilliantly, is reliable, and will probably last forever. Many consider it a good value for money, with good airflow and power. Customers also appreciate its control over airflow and bubble quality.

AI-generated from the text of customer reviews

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QuietnessPump qualityBuild qualityValue for moneyAir flowPowerAirflow controlBubble quality
307 customers mention ‘Quietness’242 positive65 negative

Customers appreciate the air pump's quiet operation. They mention it feels well-built, and the bubbles are louder than the pump on all settings.

"Excellent air pump, quieter than expected and powerful enough for reasonably deep air supply. Very easily set up and perfect for my requirements." Read more

"...be wall mounted, individual and adjustable air outlets, these are very quiet compared to others on the market, i simply always put a piece of under..." Read more

"Excellent aquarium pump, very quiet in operation, two adjustable air outlets. Sturdy machine. Would definitely recommend." Read more

"...That being said this model is very quiet but unfortunately the sound from the actual bubbles are very loud which will be the case no matter what..." Read more

174 customers mention ‘Pump quality’166 positive8 negative

Customers are satisfied with the pump's performance. They find it powerful and quiet, providing good output for their needs. The air adjuster is a useful feature.

"Excellent air pump, quieter than expected and powerful enough for reasonably deep air supply. Very easily set up and perfect for my requirements." Read more

"...Eheim are a great quality brand so probably last me years to be fair. These are powerful air pumps not weak like some others...." Read more

"Excellent aquarium pump, very quiet in operation, two adjustable air outlets. Sturdy machine. Would definitely recommend." Read more

"Pump works brilliantly, using it for sponge filters on sponge tank and it works really well for this...." Read more

57 customers mention ‘Build quality’51 positive6 negative

Customers appreciate the air pump's build quality. They find it reliable, well-made, and durable. The pump is quiet and easy to set up, with a 3-year warranty.

"...These Eheim air pumps are clearly excellent quality. Very durable and rubberised feel, can be wall mounted, individual and adjustable air outlets,..." Read more

"...Sturdy machine. Would definitely recommend." Read more

"...Eheim products seem to be well made and sturdy so hopefully this lasts well, I also have an eheim canister filter that has been going strong for 3-4..." Read more

"...go with in my opinion, I have a filter of theirs too and the build quality is unbeatble, I trust them far far more than other brands" Read more

57 customers mention ‘Value for money’49 positive8 negative

Customers appreciate the air pump's value for money. They find the price reasonable and say it's worth the cost.

"...In conclusion, definitely quieter than before, but is it worth the extra expense....erm, the jury's out on this one!" Read more

"...The bubbles have never been so good! It’s far better and definitely worth the £26..." Read more

"...when compared to other models, but it is absolutely worth spending a couple of quid extra for a superior product...." Read more

"...Definitely worth paying a few quid extra !" Read more

47 customers mention ‘Air flow’42 positive5 negative

Customers appreciate the air flow of the pump. They find it powerful and quiet, able to pump enough air for tanks up to 60 litres. The adjustable design allows for easy control of the airflow for different tanks. It also adds a lot of oxygen to the tank.

"...These are powerful air pumps not weak like some others...." Read more

"Great air pump...." Read more

"...It also has a dial so can run quite gently if required but good flow when turned up full. Came with airline & stop valve. Perfect!..." Read more

"...Bubbles are good, pump is powerful and the ability to control the flow is good." Read more

47 customers mention ‘Power’47 positive0 negative

Customers find the air pump powerful enough to run a bubble stick, air curtain, and a 12" airstone in their aquariums. They say it's quiet and efficient, providing ample power to supply their tanks.

"Excellent air pump, quieter than expected and powerful enough for reasonably deep air supply. Very easily set up and perfect for my requirements." Read more

"...Caused such a great current that I feel confident we can now have bamboo shrimps. Best bit: SO QUIET!..." Read more

"...Quiet and efficient" Read more

"...of my last one (marina 300) with just as much air flow, will easily power a 12" airstone in a deep tank, has an adjustable airflow output too, not..." Read more

36 customers mention ‘Airflow control’36 positive0 negative

Customers appreciate the adjustable airflow control of the air pump. They find it useful to have two outputs with adjustable flow rates for each outlet, a dial setting for greater or lesser air flow, and a built-in air adjuster which is useful. The included adjustable air stone seems OK but they did expect it to be better. The pump is powerful and the ability to control the flow is good.

"...Comes with a diffusor (two with the 400) to which they are adjustable so you can make bubbles bigger/smaller (i personally don't use these myself),..." Read more

"Excellent aquarium pump, very quiet in operation, two adjustable air outlets. Sturdy machine. Would definitely recommend." Read more

"...The included adjustable air stone seems OK but I did expect it to be better. Delivery was really quick,..." Read more

"...Bubbles are good, pump is powerful and the ability to control the flow is good." Read more

21 customers mention ‘Bubble quality’21 positive0 negative

Customers like the bubble quality. They say the stream of bubbles is nice, quiet, and powerful. The fish love the airbubbles without froth. The pump provides sufficient flow to give a good bubble curtain. Some mention it's better than stuff double its price and that their fish are happier and livelier.

"...This Eheim pump was just an absolute game-changer. LOADS of bubbles, even on the lowest setting...." Read more

"...The included air diffusers are excellent, and do a great job of creating a smooth flow of bubbles, even at a max setting they're not crazy loud when..." Read more

"...Being able to vary the power of it is great, and the stream of bubbles are very nice, my tetras were wary at first but now they dart through or hang..." Read more

"...Bubbles are good, pump is powerful and the ability to control the flow is good." Read more

Great air pump
5 out of 5 stars
Great air pump
First, I wasn't sure which air pump to buy, but I got help from social media which one to buy. I picked Eheim Air 100, and honestly, one of the best decisions I made. Nice quite pump working brilliant with sponge filter.
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Top reviews from United Kingdom

  • pauline
    5.0 out of 5 stars Eheim 400
    Reviewed in the United Kingdom on 19 February 2025
    Size Name: 400Verified Purchase
    Excellent air pump, quieter than expected and powerful enough for reasonably deep air supply. Very easily set up and perfect for my requirements.
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  • MR
    5.0 out of 5 stars Eheim quality german engineering as always from Eheim, best air pumps i've ever used. Highly recommend.
    Reviewed in the United Kingdom on 29 May 2017
    Size Name: 100Verified Purchase
    I own the Eheim 100, 200 and 400 air pumps for 4 years now and I love the Eheim brand simply because of the german engineering quality. I own there external filters, air pumps (100,200,400) and multiple other products. There products never fail to impress me. These Eheim air pumps are clearly excellent quality. Very durable and rubberised feel, can be wall mounted, individual and adjustable air outlets, these are very quiet compared to others on the market, i simply always put a piece of under tank foam underneath them just to stop vibration noise on the tank cabinet. Quietest air pumps i've ever bought i would buy again if needed. Eheim are a great quality brand so probably last me years to be fair. These are powerful air pumps not weak like some others.

    Some people saying they are not quiet, no air pump will be 100% quiet and hence i always put my air pumps underneath some foam (fish tank base foam) for example to reduce vibration noise, if you put an air pump on a hard surface ie, wood, glass then you will get vibration noise. I have mine in my tank cabinet and do not know it's even on it's that quiet. You will hear more noise from the air bubbles in the tank than you would hear the air pump. I honestly cannot hear it at all in a quiet room with tv on on low. Would highly recommend this airpump and the Eheim brand in general. I love german engineering as always get good quality products.

    TIP: Do not forget to buy decent non return valves to prevent water syphoning down air line tubing into the air pump ie, if electric go's out (this prevents flooding, potential electric shock and fire). A cheap must have item for anyone with a air pump. Safety is a must when dealing with water and electrics.

    Also don't forget to buy airline tubing, It comes with approx 1 meter (approx just over 3 feet) of air line tubing but may not be enough for everyone. just measure and decide if it will be enough. Comes with a diffusor (two with the 400) to which they are adjustable so you can make bubbles bigger/smaller (i personally don't use these myself), nothing wrong with them however.
    34 people found this helpful
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  • wazzok
    5.0 out of 5 stars Very quiet.
    Reviewed in the United Kingdom on 9 September 2024
    Size Name: 400Verified Purchase
    Excellent aquarium pump, very quiet in operation, two adjustable air outlets. Sturdy machine. Would definitely recommend.
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  • Bradders
    4.0 out of 5 stars Not silent
    Reviewed in the United Kingdom on 2 March 2024
    Size Name: 100Verified Purchase
    After much research looking for a truly silent air pump I came across reccomendations for this eheim model.

    1st things 1st, you won't find a traditional air pump that is truly silent so give up hope of that,
    That being said this model is very quiet but unfortunately the sound from the actual bubbles are very loud which will be the case no matter what pump you use,
    Even on the lowest setting the pump is extremely powerful, so much so that I had to separately purchase an adjuster valve to lower it even more,

    The included adjustable air stone seems OK but I did expect it to be better.

    Delivery was really quick,

    Eheim products seem to be well made and sturdy so hopefully this lasts well, I also have an eheim canister filter that has been going strong for 3-4 years so have no doubt of the quality.
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  • stucody
    5.0 out of 5 stars Very good air pump
    Reviewed in the United Kingdom on 18 September 2022
    Size Name: 100Verified Purchase
    The first one I received was very noisy whenever the level of bubbles were turned up from minimum. I posted a question on this product page and discovered the one I had was faulty as they are supposed to be quite. So returned it, in which the return service was brilliant for as soon as it was registered at the post as having been posted I immediately got the refund in Amazon vouchers which allowed me to order a new one straight away for prime next day delivery.

    The new one was much better as it made no noise when the bubbles level was turned up. The only noise is the sounds of the bubbles! I do have mine sitting on a rubber mat which may make the unit quieter? The only time it becomes noisy is if a cable etc should make contact with the unit.

    Overall I’m impressed with this air pump.
    One person found this helpful
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  • g l minihan
    5.0 out of 5 stars Quieter than the bubbles!
    Reviewed in the United Kingdom on 15 January 2023
    Size Name: 200Verified Purchase
    Upgraded the pump that came with my son's 60l Biorb life, which was ridiculously noisy. This Eheim pump was just an absolute game-changer.

    LOADS of bubbles, even on the lowest setting. Miles more than previously through the bubble tube. Used the second outlet for one of the airstones provided with the Eheim pump. Caused such a great current that I feel confident we can now have bamboo shrimps.

    Best bit: SO QUIET! The bubbles are noisier than the pump on all settings. Just amazed that we put up with biorb pump for weeks before investing in this. Best upgrade ever.

    Note: For anyone with a biorb life wondering, you can add an airstone even if your lid already has a heater cable through it by drilling through the tank above the waterline. Use a wood bit, preferably already dulled a bit, use frog tape on each side where you drill, and go super slowly with hardly any pressure. Catch any swarf on the inside by taping a folded piece of thin plastic (e.g. from windows in food boxes) to the inside. Takes ages but works.
    2 people found this helpful
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  • Daryl
    3.0 out of 5 stars Works well, just loud
    Reviewed in the United Kingdom on 31 October 2023
    Size Name: 400Verified Purchase
    Pump works brilliantly, using it for sponge filters on sponge tank and it works really well for this.

    It's a compact unit, so not too large, tucks in well behind tanks.

    The included air diffusers are excellent, and do a great job of creating a smooth flow of bubbles, even at a max setting they're not crazy loud when they break the surface.

    The issue I have with it, is the pump itself is quite loud and is giving a noticeable humm so it's not great in my placement in the living room. In a fish room, this wouldn't be an issue.

    Overall a great pump, just be aware that it's nowhere near silent.
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Top reviews from other countries

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  • Javier Gómez Moya
    5.0 out of 5 stars Sin ruido
    Reviewed in Spain on 9 February 2021
    Size Name: 100Verified Purchase
    No hace ruido
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  • Jose Miguel Morcillo Gomez
    5.0 out of 5 stars Bomba de aire inmejorable
    Reviewed in Spain on 3 November 2020
    Size Name: 400Verified Purchase
    Buen flujo de aire para dos boquillas
    Report
  • Grano
    5.0 out of 5 stars Très bon produit correspondant totalement à mes attentes
    Reviewed in France on 2 July 2020
    Size Name: 400Verified Purchase
    Très bon produit de marque EHEIM, puissant, silencieux, 2 sorties réglables indépendamment et très bien fini. La prise de courant au standard américain dissimule une prise européenne, bien vu pour la polyvalence! Accessoires de très bonne qualité avec un vrai tuyau à air. Je recommande vivement de produit.
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  • Stefano Pini
    2.0 out of 5 stars Pessimo acquisto
    Reviewed in Italy on 13 January 2020
    Size Name: 100Verified Purchase
    Molto rumorosa, vibra tantissimo, non si può mettere su un ripiano di legno perché vibra, neanche appendere perché si muove tantissimo e sbatte se non è fissata perfettamente... ho provato per terra, va meglio, ma nel silenzio si sente comunque tanto! Restituita
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  • Cricridaix
    5.0 out of 5 stars Top qualité
    Reviewed in France on 14 October 2018
    Size Name: 100Verified Purchase
    Cette pompe à air est irréprochable, elle est effectivement très silencieuse pour une pompe à membrane (certaines turbines de filtres font plus de bruit !) et elle est bien équipée (bulleur + ventouse et tuyau à air), et tout le monde connaît la réputation de Eheim !
    ATTENTION PAS DE PANIQUE AVEC LA PRISE ANGLAISE !!! Le boîtier se dévisse et laisse apparaître une prise européenne à l'intérieur (voir photos) ! J'ai effectivement failli renvoyer l'article car non conforme, et en vérifiant dans les commentaires des clients j'ai trouvé l'astuce, heureusement !
    Le vendeur devrait le préciser dans la description de son produit, ça lui éviterait des commentaires négatifs (j'étais parti pour en mettre un) et ça éviterait aux acheteurs des retours inutiles.
    Customer image
    Cricridaix
    5.0 out of 5 stars
    Top qualité

    Reviewed in France on 14 October 2018
    Cette pompe à air est irréprochable, elle est effectivement très silencieuse pour une pompe à membrane (certaines turbines de filtres font plus de bruit !) et elle est bien équipée (bulleur + ventouse et tuyau à air), et tout le monde connaît la réputation de Eheim !
    ATTENTION PAS DE PANIQUE AVEC LA PRISE ANGLAISE !!! Le boîtier se dévisse et laisse apparaître une prise européenne à l'intérieur (voir photos) ! J'ai effectivement failli renvoyer l'article car non conforme, et en vérifiant dans les commentaires des clients j'ai trouvé l'astuce, heureusement !
    Le vendeur devrait le préciser dans la description de son produit, ça lui éviterait des commentaires négatifs (j'étais parti pour en mettre un) et ça éviterait aux acheteurs des retours inutiles.
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