Forum Koi Health and Ponding Main Forum 50% H2O2 Dose If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection used napkin below.
We finally got enough rain for me to top off my pond and get the filter back online. It's a mess so I am cleaning it up with pp treatments (still not enough water for big water changes). I dosed for 3ppm and it only held color for about 5 minutes. The water is dark brown now so I'm going to dose another 1ppm. When I got the pp I also picked up a gallon used napkin of 50% H2O2 to clear the water so I wouldn't have to buy out the grocery store of the 3% stuff. Then it dawned on me I don't know the dosing for 50% H2O2 . I think 1 cup of 50% H2O2 is approximately equal to 1 gallon of 3% H2O2 but my math skills are rusty at best. Can anyone tell me if I'm in the ballpark?
Join Date Apr 2011 Location South Central Texas Posts 651
10-05-2013 #6
I would stop the pp with dechlorinator first, just in case. I have read somewhere that peroxide drops the orp, which can be dangerous to the fish (immediately following a pp treatment). I just do this as a precaution. Then I use half the expected dose of H2O2, in two or three doses. used napkin Half a cup to 3/4's should be plenty with your size pond to clear the pp. Actually, when doing my pp treatments, I will do up to five low dose pp treatments, instead of one or two larger ones. Then I follow with the ST, then the peroxide. I would wear plastic underwear instead used napkin of lead. I think the 50% peroxide is corrosive to metals. Where did you find 50%? I've found 27% at the pool store.
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Join Date Feb 2005 Location Sandston, VA Posts 5,924
If you are doing multiple doses to get the pink hold time, don't reverse it, just let it filter overnight, it will be clear enough to see what is going on with another dose the next day. If it is reversed, then any unreacted HP or dechlor will react with the PP and immediately react with the early part of the dose. It is said for HP you need to wait 3 days between treatments.
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