Sweet Algae relief

So where do you get it from? the local chemists?

We call it a pharmacy in the US, but yes, anywhere they sell bandages they will almost certainly have Hydrogen Peroxide nearby.
 
we have a 125 gal tank with 2 8-inch oscars and no plant life ans a green algae problem. have to chage water every weekend because its green. do you think the peroxide thing will work for us and if so how would we do it?
 
I think the peroxide trick is really for spot treatments. Green water is better handled through improvement of water parameters with water changes. How are your nitrates? I don't think peroxide would be an appropriate treatment for this, but I do think you might benefit from starting a thread asking what people have done successfully for green water.
 
This is going to sound stupid, especially after plantbrain's ultra logical solution above. But I've met folks that swear by putting a willow branch in their tank to clear green water. Leave it in for a week or so, might even get little buds, but they say it works like a charm.
 
This is going to sound stupid, especially after plantbrain's ultra logical solution above. But I've met folks that swear by putting a willow branch in their tank to clear green water. Leave it in for a week or so, might even get little buds, but they say it works like a charm.

that has to do with the fact that the willow branch is an ENORMOUS nutrient sponge, and with no food, the algae is outcompeted and dies.


i wonder how peroxide would work on green water.. hm... i'll test it tonight.
 
I bought some h2o2 today with the intention of hitting a few spots with a syringe in my 10 gallon. the tank is virtually algae free, but 3 or 4 areas have sprouted black hair over night, where I used plants from another tank. I have removed leaves, but it returned quickly, and there is very little waste or bioload in the tank at this time, and conservative light time... I want to really limit the amount I put in, to be safe... what would you say a max dose would be? I was thinking no more than 1-2ml...
 
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