Hydrogen peroxide 35%

[Plantbrain]

I believe you require license to purchase Hydrogen Peroxide with more than 20% concentration

http://www.spf.gov.sg/licence/AE/FAQ...Precursors.pdf

And this is a good thing, 35% is dangerous stuff.
Very.........

Regards,
Tom Barr

[jiajuen900]

Erm, never used H202 to nuke algae before... But after reading this thread just wondering. We can use it directly in the tank with fishes, plants and filter?

I always thought it was something to use when cleaning tanks when their empty

Pardon this question if its silly

[bio_aquatic]

I use them to kill (nuke) algae in the tank. Just carefully dispense the HP with a syringe directly on the algae growth. You will see it working as the algae starts to fizz. Since the byproducts of the 'nuking' is Oxygen and water, it is quite a safe alternative to using Excel to kill algae. Its quite addictive to me since i am always bugged with hair or BGA.

That's interesting. My tank has plenty algae, green and brown. So, to clear them, if I simply add it the HP into the tank, do you think it will work? Will this method affect the fishes?

If I used the syringe method as you mentioned above, I think the whole 500ml bot will not suffice for my 3-ft tank - too much algae in my tank and all plants have it.

[Shadow]

yes it will affect your fish. What you need to do is use syringe for spot treatment. There is a max dosage, although I don't remember. You can just pour the whole think into the tank.

[felix_fx2]

Once before after dosing, half of my cherry barbs and all my otos died....
but the day before i was enjoying the bubbling from it.

[zonkkie]

Pour the whole 500ml I thought its a bit of overkill. Seriously, can anyone share the amount that we can dose per liter of aquarium water? I got mine and tested with 3x5ml syringeloads and the fishes seem a bit stressed. And there seems to be an oily film on the surface.

[blue33]

I've ever try 15-20ml on 2ft tank, shrimps inside, no casualty.

[bio_aquatic]

Thks for the input. I also just did a WC and hopefully, with some HP into the tank, will control the algae. I did manual cleaning of the algae on the plant leaves and some plants that had plenty algae on them, I simply pulled them off and got rid of them.

[Shadow]

if it is on the plant, trimming it is the best action, unless all the plant leaf have algae .

[felix_fx2]

I've ever try 15-20ml on 2ft tank, shrimps inside, no casualty.

adrian your lucky,

i dosed 20ml shrimp died, but only 1 cause i removed the rest aboard the larger tank

[blue33]

lol... not lucky actually, i often do that , still no casualty.

[reavery]

Hi Blue33,

Once you dose 15 to 20ml to your 2ft tank, does the algae die "Straight" ? or the effective result will only happen in between an hours or longer ?

From,
danny

[Neutral81]

Hi, is there any guidance for the amount of H2O2 to be dosed for 3 feet tank. I am keeping CRS but is always bugged by hair agle. Thinking of using H202 to get rid of the agle but not very sure if it will affect CRS. Anyone got any advise?

[mjck]

i dose 10 ~ 15 ml using 5ml syringe in my 120L tank. So far no issues with the sakuras (mostly babies), yamatos, otos, galaxies or ruby tetras. Turned off all my pumps and filters and let the water still for about 10mins before spot dosing. Also i let the H2O2 do its job for about 15 ~ 20 mins before turning the pumps/filters back on. I believe if you leave the pumps on, the H2O2 will be diluted by the tank water and get to the fishes or shrimps.

From what i observed, the fizzing will stop after about 15 mins, so i guess thats the effective period where there is breakdown of organic matter by the H2O2.

[blue33]

Hi Blue33,

Once you dose 15 to 20ml to your 2ft tank, does the algae die "Straight" ? or the effective result will only happen in between an hours or longer ?

From,
danny

The algae will immediately deteriorate, BBA for example, it will change colour after you spot dose. What "mjck" do is correct, never on anything that causes current, my shrimps seem doesnt affected at all and even come close to H2O2. There are times i tried on the shrimp when they come close and they are not affected at all.

[reavery]

Hi All Si fu,

I just bought H2O2 6% from Guardian..

Dose around 50ml to the tank .. <- my tank is full of Hair algae, saw lots of zzz bubble up and down.. hmm, hopefully, the hair algae will disappear in one of 2 day or do i still need to manual remove the hair algae??!!!

My tank doesn contain any Livestock! Just purely HC and Rotala SP

[mjck]

HI Reavery, which Guardian did you get the 6% from? In Malaysia?
I guess you need to remove the dead algae manually. I got shrimps to do that for me

[reavery]

Hi Bro,

THe brand is POLYLAB . i got it from Guardian Tmn Megah, PJ, beside secret recipe and Opposite Pets family ..

[felix_fx2]

lol... not lucky actually, i often do that , still no casualty.

Correction, i found the shrimp already. so only the cherry barbs died.
think maybe they were on starve diet .

but its very effective, BBA mostly gone.
downside is they do seem do damage plant tissues also, and my japonica pretty damaged now.

[blue33]

lol... normally after H2O2 we do WC.