This is kind of a follow up question on my old post about my filtration. Currently my HOB filter does 400 gph in a 75 gallon tank. I plan on getting another filter, but lets say I just keep my 400 gph filter. How many fish can i put in my 75 gal with only a 400 gph to keep a healthy environment? I plan on adding: 2 Angelfish 1 Clown Pleco 5-6 Congo or Rainbow Tetras 3-4 Boesemani rainbowfish 2 German blue ram I assume this amount of fish would be fine if my tank was 600 gph. How many fish would I need to remove for a 400 gph filter?