the fish room has been a project of mine for some years now. I enjoy playing with hydraulics, pneumatics, and energy recovery so I made a lab. All 62 tanks are on one water pump that moves 4600 GH on 200 watts draw plus many air lifts. From the pump the water goes through my filter/ bio mass generator and then through the tanks. I have several greens and lettuces growing in a NFT style aquaponic system still off the same water pump. These plants help keep the nutrients from the shrimp and fish at a balanced level and the greens taste great, plus the plant roots become snacks for the snails and shrimp. I breed and raise Macrobrachium rosenbergii which is a giant river prawn along with many other fish and snails.
I assume you want more on the filter. Its been a long quest to get where I am now. I will try to describe the filter for you. I started with a sand filter many years ago and realized how much more power the water pump had to use to push the dirty water through the sand, not to mention all the water waist when backwashing it. Next was a bio media trickle filter which uses much less power to run but had the same water waist when cleaning it. I took the trickle filter and turned it upside down meaning I took a barrel with a few screens to hold in the media and flowed the water from the bottom of the barrel up through the media and out a drain at the top. This works great. I used air to clean the media before I just opened a valve to discharge the dirty water. still a lot of water waist so eventually I connected another barrel under the media barrel to collect air and release it all at one time to clean the media. The dirty water drains into the bottom barrel cleaning the media then the pump fills the media barrel back up with clean water. the dirty water is now in the lower barrel and the dirt will settle on a drain system that will automatically push the sludge into an anaerobic system (another barrel) to finish removing nitrates and phosphates. After this process the sludge is removed with a valve to a mineralizer for an outdoor hydroponic system. This limited my water waist to almost nothing. I also figured out how to collect the air off of overflows and compress it for use on this filter it turns out the technology is called a troumpe and works wonderfully. I built a foam fractionator that runs another hydropic system with its discharge on the same system.
I am sure I left something out and I am glad to answer any questions, but remember I have sacrificed many fish learning how to build this system and there are many things that need to be considered if going to use this style of filter. It took me a lot of time to get the anaerobic filter to not be a nitrite generator and choosing carbon sources can be even trickier so be very careful.
Texas Joe