Nitrite = 0
Nitrate = 0
pH = 6.4 (lower than normal but I am running pressurised Co2 now)
Ammonia = 0.25
On the Clown Loach, and a few of the Pentazonian Barbs have it a bit too. none of the other fish have it, they are Kissing Gourami, Dwarf Gourami, Sailfin Molly, Corydora Catfish & Cardinal...