I will soon be purchasing two Rena XP3's for a 100 gallon tank that I will be housing a single 5" Serrasalmus Rhombeus. I'm wondering what type of media I should have in the canisters and how I should have them set up?
in my canister, I have sponges in the bottom (coursest on the very bottom), in the middle I have biostars and ceramic rings, in the top I have it stuffed with polyfill. Hope this helps.