[Hendersonracing]

Originally posted by DrBDC
There really isn't a useful test for iron but it's a very large range of safe levels. Here is an article on it:

http://www.advancedaquarist.com/issues/aug2002/chem.htm

I add it only to boost the growth of my cheato to help with my overfeeding and big fish.

I have some big fish too & feed alot....How does your cheato grow?? mine is a pretty slow grower!