I have a small tank, 32lts, 14x13x14in.
set up on 19th oct 08 (8 days ago)
tested the water sunday morning and all was fine (ammonia 0, ph6.5, kh 3, gh 6, n02 0, n03 10).
so went and got 2 corydoras catfish and 4 neon tetra's
Today, one of the catfish has spent most the day not moving much...