240g

Hey everyone...Im perplexed and need some help. I have what I feel is more than adequate filtration, flow etc on a yr old established tank and Im still reading what I consider high nitrates for such small stock & large water column. I havent tested the water directly after a change (I will...

So I have a 240g 8x2x2. Originally it was stocked with: 4 Silver Dollars 1 Breidohri 1 Salvini 1 Escondido 2 Festae ( both ended up being females) The Salvini died about 4 months ago mysteriously with no sign of illness or aggression. The escondido had some sort of infection on it's back...