Originally Posted by vicky
In my experience, fish trying to escape means time for an extra water change or three, especially if this is new behavior for them. How much peroxide did you use?
It was just this one new fish that was acting strangely--I assume it was strange behavior, I've never had an oto before. The rest of them seemed fine.
I followed the guidelines I found in the flourish thread--he had used 100 mL (a half cup) for a 58 gallon tank for one week. My tank is a 55, so I reduced that a bit and used it for three days before I started seeing undesirable changes, hence my water change this afternoon.
So, overall, the tank-wide treatment with H2o2 was very successful against the hairy black algae, BUT:
--it killed the hornwort
--it made the swords look distressed
--it seems to have killed the eelgrass (leaving it in there to see if it perks back up or grows fresh leaves)
--questionable behavior seen in a new fish...jury is out on whether water quality caused it.
If I had to do it again, I'd choose the flourish route. Let's hope it doesn't happen again.....