How low below the recommended amount of biopellets can one go while still being effective. My work is planning on using a biopellet reactor for our 700-800g fish system. The problem is that we would need about 2500ml of biopellets for the recommended amount. Given that a typical reactor such as the BRS one only holds 350ml, we would ned a LOT of reactors. I don't want 0 nitrate so I was already wanting to run less than recommended, but I am curious how effective something like 1/4 of the recommended amount would work on this system.