Hydrogen peroxide dosage? / Algae treatment

[emmie943]

I've recently have had an algae bloom in my 20 gallon freshwater planted aquarium most likely due to overfeeding. I've cut down on feeding and have adjusted the photo period of my tank. I was wondering if someone has experienced using hydrogen peroxide to treat a whole tank? What dosage would you recommend? Currently the only fish in there are guppies along with their fry, would this be safe for them? I would be using 3% hydrogen peroxide.

 

[Mebbid]

What type of algae is this?
What lights are you running over your tank?

Imho, the best bet for treating a tank with hydrogen peroxide is to do spot treatments of the problem areas. I would turn off the filters, take 5ml or so of hydrogen peroxide, and using a syringe squirt it at the problem areas, wait 10 - 15 minutes then turn the filters back on. Repeat this daily and it should safely clear up your issues.

 

[Shadey]

how bad is it? what Mebbid said sounds good, but if its REAL BAD...

I got hurt and was unable to deal w my tank last year, so algae took over the whole thing. I ended up pulling my betta out and doing this treatment:

The "One-Two Punch" Whole Tank Algae Treatment - The Planted Tank Forum

and it was amazing.

 

[emmie943]

Three days ago it was just slightly cloudy water then yesterday it was worse now the tank is fully green water. I did a 35% water change yesterday assuming that would help but it just fueled the fire and gave the algae a better opportunity to grow. Im not running the lights at all but the tank is exposed to room light. Also I've started dosing flourish excel. I would prefer to keep the fish in this tank while it's being treated but if things get worse I will try the method you used.

 

[TMaier]

I just had a very bad experience where I changed the water and treated with peroxide. The water conditioners reacted with the peroxide and killed some of my inverts.

 

[flchamp89]

https://youtu.be/geFDaOhCphA

 

[TMaier]

I didn't see any bubbles? When I treated mine it bubbled like soda.

 

[blairgerman]

I've recently have had an algae bloom in my 20 gallon freshwater planted aquarium most likely due to overfeeding. I've cut down on feeding and have adjusted the photo period of my tank. I was wondering if someone has experienced using hydrogen peroxide to treat a whole tank? What dosage would you recommend? Currently the only fish in there are guppies along with their fry, would this be safe for them? I would be using 3% hydrogen peroxide.

An alternative whole tank treatment is AlgaeFix which I have found very effective with no side effects. Not good for shrimp / snails.