Hydrogen Peroxide In Fish Tank!!!!!

Okay, so I put some hydrogen peroxide in my betta tank, trying to kill the algae, then a little while later I did a water change. BUT...its still in there. So how do I get it out? I don't want it to kill my plants! (will it?) So should I do another water change or what?? HELP!

 

From what I’ve read if dosed correctly it dissolves into a harmless bi-product.

 

From what I’ve read if dosed correctly it dissolves into a harmless bi-product.

Last time my plants melted and it caused a whole-sale water lettuce die off. But that could have been from something else

 

the dissolving action (chemical reaction) could cause damage to your plants if you put too much H2O2. how big is your tank, how much H2O2 did you dose?

 

How do you know it's still there? When h2o2 makes contact with organic matter, the result is pure oxygen. Any die off would be attributed to o2 overdose I think.

 

1ml per gallon is considered generally safe unless you're a val !

 

The tank is 5.5 gallons. I just squirted some in . But would another hefty water change help

 

yes, do a very large water change asap.

H2O2 is caustic, you have to calculate and measure the correct amount and follow the instructions. It will melt plants and burn your fish's gills and kill the BB in the filter if not done correctly.

 

yes, do a very large water change asap.

H2O2 is caustic, you have to calculate and measure the correct amount and follow the instructions. It will melt plants and burn your fish's gills and kill the BB in the filter if not done correctly.

I didn’t know about it burning the fish gills or BB. Is that why it’s recommended to turn the filter off when dosing?

Also, I OD H2O2 in my tank and it burned the roots on my floaters, I didn’t really expect it lol

 

The filter thing to me is over blown . The theory behind it is to protect your beneficial bacteria but you lose cuculation. Oxygen wise it adds to the water so airation isn't an issue. Plants I'm not sure about some plants but fish and duckweed were fine at 5 ml per gallon. Yea I couldn't math. Please don't try that dose.

 

Hydrogen peroxide is a rather unstable molecule and in light, will quickly turn into oxygen and water. If you didn't add more than a couple of ml, your plants 'death' is likely to be due to the plants tissue not being healthy and reacted to the peroxide.

 

if you read the "how to" I linked above, it says to keep the filter on, just take out the filter media. whole tank H2O2 treatment needs lots of circulation. it even suggests using a power head for more circulation.

 

Okay I'll do a 50-60 % water change.

 

if you read the "how to" I linked above, it says to keep the filter on, just take out the filter media. whole tank H2O2 treatment needs lots of circulation. it even suggests using a power head for more circulation.

Oh nah I didn’t read it. But I overdosed a lot in my tank. Probably 10-15ml for my 5 gal.

 

Oh! I did a large water change 20 min after I put it in, but I'll do another one tonight

 

if you read the "how to" I linked above, it says to keep the filter on, just take out the filter media. whole tank H2O2 treatment needs lots of circulation. it even suggests using a power head for more circulation.

Yeah to remove filter media for treatment, so you can keep the filter going without the h2o2 affecting the bio media and losing effectiveness where you want it. I did read it Very good info. It also says h202 breaks down with all the organic matter, so it will affect the slime, mulm, algae and bacteria, if more than is needed is dosed, the excess affects the fishes' gills. At least that's how I understood it.

 

Okay did the 50 % change...now what?

 

I've used the hydrogen peroxide method a couple times. It does not work if you just squirt it into your tank. The reason you turn of filters is to stop water flow.(atleast that's what I've read, I could see how they would be turned off to protect beneficial bacteria as well) Then you are able to squirt h202 directly onto the targeted area either with either a spray bottle or a syringe and it has time to kill the algae, if your filters are on the h2o2 will just be blown around making it no good. H202 breaks down very very quickly once it comes into contact with water rendering it useless. So you need to stop water flow so the h202 has a chance to sit on the algae and kill it (essentially by over oxygenating it)....H202 breaks down into water and oxygen. It pretty much gets rid of itself once it's in the water for a bit. if you've already done a water change you should be fine.

 

2 large water changes should be enough to dilute any of the remaining H2O2. just keep an eye on things, do another water change if things don't look right.

 

I've used the hydrogen peroxide method a couple times. It does not work if you just squirt it into your tank. The reason you turn of filters is to stop water flow.(atleast that's what I've read, I could see how they would be turned off to protect beneficial bacteria as well) Then you are able to squirt h202 directly onto the targeted area either with either a spray bottle or a syringe and it has time to kill the algae, if your filters are on the h2o2 will just be blown around making it no good. H202 breaks down very very quickly once it comes into contact with water rendering it useless. So you need to stop water flow so the h202 has a chance to sit on the algae and kill it (essentially by over oxygenating it)....H202 breaks down into water and oxygen. It pretty much gets rid of itself once it's in the water for a bit. if you've already done a water change you should be fine.

Me too, I've only ever done spot dosing. But the one/two punch method is for majorly affected tanks, so you want the h2o2 to blow around and get to all the algae. It also uses a more concentrated dose. It is effective in the water for something like 30 minutes I think. Not my thing to control algae, I feel the sitch should be prevented and manual maintenance, but that's just me.