Anyone dose h2o2 to kill algae?

Bighauck

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#1
Anyone dose h2o2 to battle algae?
I’m considering it not sure where to start?
going to research some more

interesting video here
 

Smite

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#2
I've spot treated with it before. Killed flow, hit the area with a syringe and let it go to work. Took a few treatments but it did end up working that way. I've never broadcast dosed it like I've seen some do though.
 

Bighauck

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#4
When you spot treat with it can you add to much?
What are the negative effects?
 
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#7
I think the best approach is to deal with the cause first, and spot treat after you've been able to handle 90% of the issue with nutrient management (input/export). Some algae hold on even in low nutrient environments (as I have realized with a turf algae issue I had), and H202 helps address the last 5-10% or so that won't go away.

Good luck!
 
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#8
I'll also note that I used Microbacter Clean and Microbacter Razor (it is recommended to use these in conjunction with each other) to go along with the H202 spot treatment to get rid of the turf algae I was dealing with, and it seemed to work really well. With the spot treatment, you just want to make sure you don't use more than what it is recommended to dose in any given session.

As far as side effects, I suspect the only potential issues could come from any impurities that come with the solution (since the chemical itself is made up of hydrogen and oxygen ions- which are already present in our systems), and we are using such a small amount (relative to our systems), I can't imagine that a good WC schedule and running carbon couldn't remove these impurities.

Certainly seems like a better/safer alternative to the alleged algaecide that you'll find in products like Vibrant.

Just my 2 cents.
 

Bighauck

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#9
I have treated the issue of high no3 and pho4. There are a couple spots of GHA that I want to spot treat.
In doing so I can use 1ml per gallon to do so?
I have a 50gallon tank so 5ml should be safe?
 
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#10
5ml in a 50 gallon system should be fine (1ml per 10 gallons). I have done slightly more with no ill effects on tank inhabitants, but wouldn't advise doing so until you know how your tank inhabitants react.
 
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#11
As far as side effects, I suspect the only potential issues could come from any impurities that come with the solution (since the chemical itself is made up of hydrogen and oxygen ions- which are already present in our systems), and we are using such a small amount (relative to our systems), I can't imagine that a good WC schedule and running carbon couldn't remove these impurities.

Certainly seems like a better/safer alternative to the alleged algaecide that you'll find in products like Vibrant.

Just my 2 cents.
There are definitely potential serious side effects of overdosing. Namely, it is capable of killing everything in your tank in extreme cases! I have had good results with spot treating a few rocks at a time by removing them and pouring H2O2 over the algae-covered areas. This 100% kills hair and bubble algae in my experiance. It also kills brittle stars, asterina stars, amphipods and copepods.
 
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#13
There are definitely potential serious side effects of overdosing. Namely, it is capable of killing everything in your tank in extreme cases! I have had good results with spot treating a few rocks at a time by removing them and pouring H2O2 over the algae-covered areas. This 100% kills hair and bubble algae in my experiance. It also kills brittle stars, asterina stars, amphipods and copepods.
Should have been clearer... assuming the OP sticks within the recommended dosing parameters (1ml per 10 gallons), I don't see any reason why there would be serious side effects.

I would agree though, it is MUCH more effective if you remove the rock and treat outside of the tank, however, that mostly was not an option for me (I have mostly large rock structures in my 210 gallon), and so I had to do in-tank spot treatments with no ill-effects on CUC or other livestock (e.g., corals, fish, etc.).
 

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