How do you test for fish hormones? I haven't seen a test kit for that.
test kits for:
carbonate hardness
general hardness (TDS)
pH
ammonia
nitrite
nitrate
Maybe I misread the first time, but it was mentioned 0.25 ammonia, 0 nitrite (?) 40 nitrate (?). I recommend the more frequent water changes because your tank is still overstocked. 5 fancies max for your tank. 4 is even better. You have 6 plus 12 danios. Yor cycle may handle that if you reduce feedings, but your nitrate will rise fast. As stated before, 10-20 nitrate. Bacteria will take care of the other 2. Only more frequent water changes will get the nitrate down. That's why I recommend 2x a week, 30-50% is fine.
That was the point...Honestly...
"Quote:
Originally Posted by Jessu View Post
"I though if my readings were good then the water was good.
What is the stuff you cant test for?"
TDS (total dissolved solids), fish hormones (which can stunt growth), and probably a bunch of other nasties.
http://en.wikipedia.org/wiki/Total_dissolved_solids"