Under Gravel Filter JAD UF-20P
Under gravel filters have been around since the day dot and they continue to be a reliable method of filtration for those who are disciplined enough to conduct regular maintenance. Some online reviewers have suggested that canister filters are a superior product on the basis that under gravel filters pull all of the waste to the bottom of the tank; and that canister filters do not. Well – the reality lies somewhere in between.
Canister filters do not pull 100% of the particulates and waste in aquarium water through the filter and the suggestion that you do not need to siphon or vacuum your gravel when using a canister is simply wrong. Waste sill settles into the substrate and this results is a massive build up of nitrates and a likely tank crash if not regularly cleaned.
Under gravel filters are highly effective at breeding nitrifying bacteria and dealing with the settled fish waste. eQuaria has found that if you vacuum one quarter of the gravel in your tank once per month while using an under gravel filter, you have have very few problems if any at all. This does not really differ from the recommended gravel cleaning with any other filter system.
We have found online reviews in Australia that claim that these filters are not suited to planted aquariums due to the high levels of dissolved oxygen produced at the root level; then in the next breath say that the high volumes of nitrifying bacteria these filters house will consume said oxygen…. hmmm? Our experience is that by using a water pump rather than air, the dissolved oxygen that is produced is at much lower levels – and planted aquariums do not seem to have any issue.
The truth is that most aquarium retailers would rather sell you a $400 canister filter than a $30 under gravel filter. So when they tell you these are “out of fashion” – make your own decision!
Numerous perforations provide a huge surface area, allowing bacteria to breakdown the ammonia to less harmful nitrates
- Acts as a biological and mechanical filter.
- All models require a suitable air pump or powerhead for effective operation.
- Smaller models have a single riser tube, larger models have 2 riser tubes.
The gravel or sand must NOT be coral sand, crush corals, etc., unless your setup is Marine or for Hard Alkaline water fishes. It can be assembled freely, it depend on your fish tank size. After setting up an under gravel filter, your tank water MUST be crystal clear in 12 hours. If not, your filter is not working. Your pump may not be working properly.
Want to see one in action? Under Gravel Filter JAD UF-20P