I know, I should’ve done more research…
My algae feasting fish died a few months ago, and I haven’t had time to replace him. He did a damn good job eating algae over the years, apparently, because it sprang up surprisingly quickly in his absence.
Following directions online for cleaning an icky, algae covered air bubbler (this one) that hardly made any bubbles anymore due to the build up, I soaked it in 3% hydrogen peroxide overnight. Then I rinsed it off, scrubbed it with a new toothbrush, and soaked it in clean water. I also hooked it up to see if it bubbles again, and boy does it.
And it’s been in the bucket of clean water for two days because I don’t know if the 3% hydrogen peroxide will leave any residue that could be harmful. I didn’t read any cautions to dilute the peroxide until after I’d already done the soaking. Oops.
Is it possible that there’s still enough of a residue to harm the fish? Should I change out the water a few times or do something else before putting it back in the tank? Should I just give up on it and buy a new one?
FTR, the fish in the tank are tetras (2 glowlight and a few neons) and danios (2 celestial pearl and a zebra who was supposed to be a black neon); and I’m mostly concerned about the neons given their reputation for fragility. Tank’s 27 gallon.