peroxide sensitivity
#1 Guest_daveneely_*
Posted 23 November 2013 - 01:20 PM
#2 Guest_Erica Lyons_*
Posted 23 November 2013 - 05:12 PM
You shouldn't have to use something that might hurt your fish to try to control your algae. There are other ways.
#3 Guest_jblaylock_*
Posted 23 November 2013 - 10:09 PM
Am fighting a persnickety algal outbreak and am about to resort to peroxide... but wanted to see if anyone had noticed negative effects on fishes, and if so, are there any groups of fishes that are particularly sensitive to it?
I started using it to clean my 3d background. Shortly after I started having a lot of problems with disease on shiners. I can't say 100% that it was due to using peroxide or not. Near this time I had introduced some new fish too, so the problem could have came with them.
From what I read on it, it seems that peroxide shouldn't hurt fish....but that's debatable. So really, I've not been much help. I will say that I stopped using it on a regular basis.
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#4 Guest_rickwrench_*
Posted 01 December 2013 - 06:45 PM
Anecdotal evidence says most fish with scales tolerate h2o2 better then those with plates and skin.
Walleyes are apparently not "most" fish, and are sensitive to h2o2 (http://www.researchg...erling_Walleyes)
LD50s for daphnia and fatheads here:
http://fish.bakerweb.biz/peroxide.html
Studies for aquaculture:
http://edis.ifas.ufl.edu/fa157
What else is in the tank(s)? Plants, substrate, filter, etc...
Rick
#5 Guest_daveneely_*
Posted 01 December 2013 - 09:56 PM
The good news is that all of the fish (some darters and madtoms) did just fine at ~1mL H2O2/L, and it knocked back the algae in spectacular fashion. I'd heard the 'non-scaled' bit before and was a little worried about the cats, but they don't appear to have suffered any ill effects.
The bad news is that as I'd already dialed back light intensity to try to deal with the algae, and that last cold spell dropped my house temp somewhat, my plants (a fine-leaved Potamogeton and an interesting little Ludwigia that I never got around to keying out) had started to senesce and got toasted. Maybe they'll survive as rootstock until the spring...
#6 Guest_Erica Lyons_*
Posted 02 December 2013 - 12:00 AM
#7 Guest_gerald_*
Posted 02 December 2013 - 10:20 AM
#8 Guest_Orangespotted_*
Posted 02 December 2013 - 11:51 AM
#9 Guest_daveneely_*
Posted 02 December 2013 - 01:48 PM
It might be more efficient to take a turkey baster or medicine syringe to squirt it right on the problem spots. Works for me, and doesn't harm other plants in the tank which are sensitive (hornwort, najas, elodea).
Yeah, the problem is the darters are used to being fed by pipette, so they swim up expecting food. I'll keep the lights-off trick in mind for next time if it comes to that. Sneaky...
Fish are alive, algae is knocked back, and plants are either alive or dead. If they don't come back in the spring, there's plenty more where they came from. Worse things could have happened.
#10
Posted 06 July 2020 - 04:40 PM
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