Pimp My Filter #90 - Eheim Liberty 75 Hang On Back Filter Upgrade @pondguru

Uploaded October 2024 | Updated September 2026, 1 hour ago

Is this the ugliest filter you've ever seen? It is for me.
Do not buy this filter - here's a much better one:
APS HOB-500 (Amazon): geni.us/Q4AI37t
APS HOB-500 (Ebay): ebay.to/2DZfrnz
Added to that, the amount of filtration offered by the 'Liberty 75' is below minimal considering the large 'boxy' design and the cartridges cost a fortune - check this out for a shock: geni.us/KJw2X
Luckily this filter doesn't seem to be widely available in the UK so any other HOB filter option is better.
To name this filter 'Liberty' then tie users into regularly buying expensive cartridges is an inversion of reality but it is another indication of how far Eheim have fallen as a company. Many years ago they were the top company in the industry but now seem to prioritize profit over reputation, making filters from increasingly cheaper materials. To be fair this HOB filter is made with decent materials but it has a face not even it's mother could love.
Please post your reports of using this filter long-term in the comment section - that is what it is for. Thanks in advance.
As long as you avoid using damaging water conditioners which starve the bacteria in the system by messing with the ammonia, nitrite and nitrate (e.g. Prime) there is no reason why you shouldn't be able to achieve a full cycle (0-5ppm nitrate) when your filter is properly sized and set up well with suitable filter media.
That's what this series of videos is all about so if you've found this video useful please share it on Facebook, whatever Twitter is now or any other 'social' media sites.

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Feel free to share or link any of my for the benefit of anyone you think may also enjoy watching.
See you next time.
Pondguru (Richard)

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$Pimp My Filter #68 - Oase Filtosmart 60 Canister / HOB Filter Upgrade There are much better alternatives than this filter available at a fraction of the price - check out some of the recommendations and associated videos below: Oase Filtosmart 60 (Amazon): https://geni.us/BGo2O It is now a ridiculous price on Amazon and still has no cradle to hold it on the back of the tank.... All Pond Solutions HOB-500 (Amazon): https://geni.us/Q4AI37t All Pond Solutions HOB-500 upgrade video: https://bit.ly/3gUXlWb Seachem Tidal 55 HOB filter (Amazon): https://geni.us/9fEuQ Seachem Tidal 55 upgrade video: https://bit.ly/3I36ism The good Oase range of external filters is the Biomaster / Biomaster Thermo filters - if you want a great filter for a medium to large tank then I would recommend those. Avoid the Filtosmart range. Oase Biomaster 600 canister filter (Amazon): https://geni.us/TBBKDhz Oase Biomaster 600 upgrade video: https://bit.ly/3sORlnE Oase Biomaster 850 canister filter (Amazon): https://geni.us/Yzrg3UG Oase Biomaster 850 upgrade video: https://bit.ly/3oXvKYQ The Biomaster filters are in very short supply due to their popularity - if theyre sold out it is still worth checking out the reviews for them on Amazon from people who have bought and used them. Foams, Biohome Ultimate, Biogravel etc: http://www.filterpro.co.uk (FilterPro site has links to Biohome suppliers in other countries) Follow me on Odysee: https://odysee.com/$/invite/@PondGuru:0 Contact me on 07772848730 / sales@filterpro.co.uk (I dont do texts) The following videos will be useful for learning more about filtration and filter media: Sizing a canister properly and filter set up: https://goo.gl/om19un Looking INSIDE different filter media: https://goo.gl/hZWS6c Bacteria and filter media: https://goo.gl/123gAF How to clean an aquarium: https://goo.gl/bPMhvh Aquarium tips / filtration playlist: https://goo.gl/pXgqVj A full cycle is completed by bacteria - the aerobic part of biological filtration which processes ammonia to nitrite and nitrite to nitrate followed by an anaerobic part which processes nitrate into soluble nitrogen which bubbles off to the atmosphere. Therefore it requires a suitable amount of excellent quality filter media to be able to provide the environment for both aerobic AND anaerobic bacteria - that is what Biohome filter media does perfectly but even with such good media there are limitations and we recommend the following amounts for different stocking scenarios: (1 US Gallon = 3.8 litres) (1kg = 2.2 lbs) Average community tropical aquarium = 1kg per 100 litres Average coldwater aquarium = 1kg - 1.5kg per 100 litres Predator aquarium = 1.5kg - 2kg per 100 litres Large cichlid aquarium = 1.5kg - 2kg per 100 litres Malawi / Tanganyikan aquarium = 1.5kg - 2kg per 100 litres Marine aquarium = 1.5kg - 2kg per 100 litres Average mixed fish pond = 1kg per 200 litres Average koi pond = 1kg per 150 litres You may be disagreeing with the above figures but remember that they are for a FULL CYCLE not half a job - achieving 0 ammonia and 0 nitrite is quite easy since aerobic bacteria grows freely on any surface but the anaerobic bacteria responsible for COMPLETING the cycle needs more a specialized habitat. Remember to use a water conditioner which does not bind / detoxify ammonia, nitrite or nitrate as that type of conditioner will severely limit bacteria numbers by starving the bacteria of food. Size a filter properly, set it up sensibly and you will have perfect water - its that simple....and your filter wont be the dreaded Nitrate factory.....youll spend less money on treatments too......basically the filter is the foundation of a successful aquarium. This series of videos is all about trying to squeeze more efficiency out of internal and external aquarium filters which generally have a limited filtering capacity - If you have a filter youd like me to feature in a video then please contact me on: sales@filterpro.co.uk 07772848730 (Richard) Anyone who sends a filter (UK only at present) will have it upgraded and returned to them for free and the only cost you will pay is how much it costs to ship it to me - Im helping to boost your filter and the resulting videos will hopefully be useful to viewers all over the world so its a win/win. Some of the links above may be to my affiliate programs on Amazon and Ebay so they will throw a few pennies my way if you make a purchase - it costs you nothing extra and helps towards keeping the lights on in my bunker. We all are on a long path of learning......... RECOMMENDED PRODUCTS ON AMAZON: https://goo.gl/jMaBWy INSTAGRAM: https://www.instagram.com/pondguru_outdoors/ Follow me on Odysee: https://odysee.com/$/invite/@PondGuru:0$