2ml of 3% shouldn't do anything, 2ml sounds right per gallon if its 30%. Iv added way more than that as well as others on many threads. 30ml per gallon is what is recommended for a fresh res, I use 1/2 that. Its never too late for input, that why I created this:rasta:. As long as its slightly intelligent please post or even to say "lookin good!:thumbsup: "