Chemi-Clean

[ClamFan]

I recently used Chemi-Clean to remove a rather pesky cyano outbreak and it didnt completly remove the red stuff. 5 days later the cyano is back but I dont want to retreat unless I know it wont do any harm. The instructions say "to keep aquarium clear, use once a month" and "change 20% of the water 24 hours after treatment".

Can someone tell me if it is safe to use this product again, 5 days after the first dose and water change? I am afraid I am goning to do damage if I use it again so soon. Also I have looked online and found no other instructions about redosing after the first dose failed.

If anyone has any ideas or suggestions they would be apreciated.

[dan]

i know that old salty used it back to back with no harm.

[eleyan]

I've used it in my tank 3 times a couple of months apart. The first time it worked like a charm. The second time it did not do such a good job, and one of my fish died. The third time it did nothing and another fish died. I'm not sure if the fish isdieing as a direct result of the chemi-clean, or if it is a result of the cyano reacting to it . Anyway, the guy at the LFS told me that the cyano can develop some tolerance to it if you keep using it. I guess that is what happened.

[ClamFan]

I seem to have a resistant kind. Sure is ugly. Eleyan, thats good to know.
Any body have any other suggestions?

[mathias]

reach in there and pull it out

[::pete::]

I used Chemi Clean a few times with no problems, but the cyano always came back. The last time I tried I used Red Slime Remover and added a filter to my RO/DI unit and I have not seen it since. It will continue to come back until you find the cause.

[GaryP]

I had a fairly mild case of cyano. Adding some additional pumps for better circulation pretty much solved my problem.

Gary