Hydrogen Peroxide for Algae Control?

Yes

Yes Hydrogen Peroxide was quite popular in the 1990's, it can be effective, it has generally fallen out of favor, I think. I suspect safer alternatives have been part of that.

It is a cheat, I have on occasion recommended, but as with any cheat, black-outs, antibiotics and all the rest really ought only be done in conjunction with steps to get at the root cause. These steps may kill the cyanobacteria (they hate oxygen) but won't cure the systemic weakness, that caused the problem.

The PPS thing rings a bell seems perhaps a problem inherent to that system.

Water changes safely introduce a lot of oxygen to the system.

I have more if there is any interest.

Biollante

 

I've seen mixed results with it; sometimes there's a touch of plant damage, sometimes it kills more plant than algae. It's still something I'd turn to if I were trying to revive a tank coated in algae, but otherwise I usually stick with excel.

Has anyone tried it with vascular plants? UG n' such?

-Philosophos

 

Yes

Yes, similar results, still not the kind of thing I recommend on a regular basis, better in my always humble opinion to fight it out, clean it up and get the conditions where they favor the plants over the cyanobacteria.

You do indeed place your plants and critters in some jeopardy, many prefer to overlook or try to pretend they have no problem, but as with any endeavor and indeed life itself; it is all risk management.

Shortcuts while tempting always come at a price.

Biollante

 

What I haven't seen done is long-term treatment. Small doses, every day, like excel. I'm sure if we dumped in enough excel to get those sort of results, we'd be doing FAR more than normal.

As it happens I'm about to have an excess of hydrogen peroxide around in the next couple of weeks (don't ask)... maybe I should do some tests on a small scale.

-Philosophos

 

All Kinds of Uses

I think there are some pretty good sources or information on H2O2 and aquariums.

In the 1% or 3% solutions commonly available it is quite safe used in cosmetics teeth whitening, wound care and so forth at one time I seem to recall it being recommended for fish keepers to have around in the event of fish gasping for air, to oxygenate the tank.

Just be careful with the stuff.

I think the UK even powered there submarines with it instead of nuclear reactors.

Biollante

 

Oh I'll be testing it on a bucket of green water with some java fern, maybe a ghost shrimp. I've also got a 1.5 gal beta tank that actually came with a CF bulb, so you can imagine the algae; I may move the beta out and test there.

-Philosophos

 

just reading this (old) thread....

I was just like philiosophos wondering what long term effects are of low-dose h2o2 treatments. I couldn't find anything relevant on the www...

could a low dose steady treatment be beneficial for aquatic (plant) life? a bit higher redox, maybe a bit inhibiting algae growth. could it act as a prophylactic (anti-algae) agent?

or will also a low dose long term treatment kill aquatic life in the end?

greets,

yme

 

Shush!

Hi,

I am not smart enough to be Dan of Philosophos fame.

I am not sure what the long-term effects of low dose H2O2 might be, since I have not used it long term and I suppose I really would not advise its use as a prophylactic agent, yet.

However, it might be interesting if you were of such a mind, and I seem to recall you come equipped with an ORP meter, to see what effect at what quantities. Of course, track readings with observation journal and correlate results as possible.

ORP in the water column is a generally taboo subject here, but using an old thread as cover and typing quietly, we may get away with it.

In one of my main display tanks, a couple of hours after lights on, I get ORP readings mid-tank in an area of high current in the 420’s (highest captured was 441-mv), obviously this is during periods of high (extreme?) pearling. This range seems to me to be approaching oxygen toxicity, yet none of the critters seems the worse for the high ORP.

This compares with most of my planted tanks that run mid to high 300-mv range.

Though taboo, I think I am coming to a point where I think I can spot many problems and relate many tank conditions to ORP.

So I may have to reconsider my advice in post six and rethink the whole hydrogen peroxide routine, carefully used, hydrogen peroxide might be a useful tool for not only algae control but perhaps even overall tank health.

Biollante

 

hi!

I wrote what was thinking!
don't know whether it is correct or not.. but still..

anyway, I am buying an ORP meter (just because I don't have it (keep it quiet)). I orderded the electrode yesterday! this is also the reason why I went browsing on this forum and came accross this post.

another way to influence the redox potential is to use this philips ozone unit. Tom said it was a bit useless in freshwater planted tanks, but it would be possible to control your ORP readings...?

I would be willing to give a long term low-dose treatment... if somebody can tell memore or less what "low dose" is... 0.01 mg/l? 0.1 mg/l 1 mg/l?


greets,

yme

 

Hi,

I think that forgetting these products is the best you can do. Quiet any tank can be recovered curing the root cause, without redoing the tank

Before:











3 months later



Despite the last photo is not a close up, I can promise you there's no algae trace and I have some closeups of all plants in this photo posted in another topic here

Most plants are the same, only pruned to accelerate the algae battle.

 

@jonny_ftm:

look at it from a different point of view:
doing blackouts= cheating. it is a big hammer that smashes the algae back while doing relatively little harm to the plants. doesn't do anything to fix the cause. (yet tom promotes this extensively)
killing bba with excel= cheating. I don't care that it is cheating. it is a very easy way to get rid of this algae.

so yes, one can do everything to try to get a good, clean aquarium.... but it might be easier with a bit of cheating..
a bigger problem for me at least: I don't know how to create these conditions. (in theory yes, but in my tank: no..)


@tom:

the question was whether H2O2 could be a little hammer that can be used to promote healthy plants (possibly by increasing the ORP), while having a mild anti-algae function.

If I understand your post(s) correctly... then low dose H2O2 does not have an anti-algae effect because there is not enough oxidation. And increasing the ORP doesn't improve plant health in general.

greets,

yme

 

A H2O2 observation: I have some long-suffering anubias that are about 10 years old. Every six months or so they have been soaked in a 5% solution of bleach to remove algae. Often they would put out new leaves right after a treatment.

Recently I cleaned them with H2O2. I applied it directly to the plants, out of the water. That seemed to bother the plants more than the bleach treatment. I won't use H2O2 again on them.

Bill

 

I haven't had a chance to test yet, get my dosing guide started, or even upkeep my tanks properly as of late; life's been busy. The next best thing I can do is offer you some good links on the subject:
http://www.aquarticles.com/articles/plants/Podio_Algae_Hydrogen_Peroxide.html - This guy writes a lot of handy articles. I'd recommend doing what he says, maybe start around .1ppm and don't go over ~.25ppm of 3% H2O2.
http://www.malawicichlidhomepage.com/aquainfo/algae_peroxide2.html - seems to indicate that anything in the .8ppm range is pretty toxic to fish
http://www.thekrib.com/Plants/Algae/hydrogen-peroxide.html - Some ball parking of levels from a classic site. The information here is a touch crusty.

If you feel like digging around, I believe there's an article in a TFH from a few years back that chronicled its use fairly closely. I don't have a copy myself otherwise I'd scan and post.

 

@philosophos:
hmmm... the links are too much short term/high dose related. I am affraid not very usefull info... :-(

@tom

this is very much true. algae growth? --> somerthing is wrong --> fix the problem

from this point of view it is even not wise to add anti-algae stuff: you miss a bio-indicator that tells you something is off....

but still... for me, there seems to be a general lack of information about long term/low dose h2o2 treatment. and since I can't stand it not to know things....
IF I will try this I will for sure want a redox meter..

greets,

yme

 

Wild Goose Chase?

Look at the bottom last post in the set Dan provides, it is that dishy Tom Barr, without rebutal.
http://www.thekrib.com/Plants/Algae/hydrogen-peroxide.html

Not that I approve but a link or two.
http://www.americanaquariumproducts.com/AquariumMedication3.html
http://edis.ifas.ufl.edu/fa157
all the way at the bottom http://www.americanaquariumproducts.com/AquariumPlants.html