Re: glutaraldehyde instead of excel So far, so good. I had worked off of the assumption that Excel is probably 2.5%; I think that was a ways back in this thread. I am dosing the Cidex Plus (3.4%) at the same amounts as Excel; daily at 1 ml per 10 gallons of tank size (not capacity), three times that at water changes. Apparently I am really overdosing, yet all plants and fish are OK so far. My main problem is green thread or hair algae- it is gone from one tank, well controlled in two others. I started using it in two tanks that I didn't use Excel in before. I didn't notice any real change in nitrate consumption, so there may be no connection there after all.
nfrank- don't use the activator. I am cynical, but I would suspect that it is just an indicator for the test strips they sell also, so that the manufacturer puts the liability for replacing the solution on the user, and makes sure they sell a lot more. Doesn't aspirin cost $5.00 each in the hospital...? I used my Cidex Plus for three months, and it seemed to work better and better, no sign of degrading. |