I currently have an aquarium with about the equivlent dimensions of a 40b setup stocking 11 H. Bentosi at the moment. The biotope I am going for is that of a very slow flowing stream. I currently run a Hydor 250 and an Eheim 2217 on the tank as filtration both with the output drastically reduced. I use the Hydor as the main flow to agetate the surface and I just have the eheim running for biological on very low flow. The problem with this is that since the tetras require such low flow I get a lot of buildup of detritus on the sand. My current remedy for this is to aim the hydor spraybar downward and then letting the output run at full power for about 5 min every 3 days. This kicks up all of the detritus but none of it really seems to go towards the intakes. With my botanicals coming in I dont think this method will be viable anymore because I feel like leaves will get kicked around the tank. I eventually will be adding a school of corydoras which might help kick up detritus but I am at a loss on how to combat the whole problem.
Below is my tank the eheim spraybar is on the top right and the hydor spray bar in the top left.
Below is my tank the eheim spraybar is on the top right and the hydor spray bar in the top left.