nuisance algae(diatoms?) - The Planted Tank Forum
 
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post #1 of 8 (permalink) Old 01-20-2011, 03:09 AM Thread Starter
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nuisance algae(diatoms?)

i have lots of these brown algae(probably diatom) stuff in my gravel. it is most concentrated on the part where there is the most ambient light. the tank is away from direct sunlight. i cannot remove it through regular vacumming. any ways to kill the stuff? h2o2?
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post #2 of 8 (permalink) Old 01-20-2011, 03:55 AM
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How old is your tank? This is regular for newly setup tanks. Any bottom dwellers or cleanup crew?
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post #3 of 8 (permalink) Old 01-20-2011, 06:52 AM
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Does the algae seem very light and whisp-like? If so, then you almost certaintly have brown diatoms.

I had the same problem bigtime when I setup my 10gal. Believe it or not, some 3% (food grade) H2O2 really did do the trick. What it does is oxidize the algae, turning it from brown to a green or even whitish color. It is then significantly easier to remove and did not come back readily, at least for me. I treated the tank while it had HC and DHG in it, and neither plant suffered unduly (though most of the HC was beyond saving at this point).

DISCLAIMER: I did not have any fauna in the tank at the time. I do not know about whether or not this will have any longterm effects on the tank. I simply had tons of brown diatoms, and it was either dose the tank with H2O2 or scrap all of the plants. I was very satisfied with the results. Your mileage may vary.
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post #4 of 8 (permalink) Old 01-20-2011, 07:43 AM
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i'd just throw in some bristlenose or ottos

i believe diatoms are mostly composed of silicates and once all of it's been used up in the water they'll start to disappear(correct me if i''m wrong) so best to just wait it out do water changes etc.
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post #5 of 8 (permalink) Old 01-20-2011, 08:18 AM Thread Starter
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Quote:
Originally Posted by Armonious View Post
Does the algae seem very light and whisp-like? If so, then you almost certaintly have brown diatoms.

I had the same problem bigtime when I setup my 10gal. Believe it or not, some 3% (food grade) H2O2 really did do the trick. What it does is oxidize the algae, turning it from brown to a green or even whitish color. It is then significantly easier to remove and did not come back readily, at least for me. I treated the tank while it had HC and DHG in it, and neither plant suffered unduly (though most of the HC was beyond saving at this point).

DISCLAIMER: I did not have any fauna in the tank at the time. I do not know about whether or not this will have any longterm effects on the tank. I simply had tons of brown diatoms, and it was either dose the tank with H2O2 or scrap all of the plants. I was very satisfied with the results. Your mileage may vary.
what would be the dosage?
How many times a day should i dose?

Last edited by specks; 01-20-2011 at 11:22 AM.
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post #6 of 8 (permalink) Old 01-20-2011, 11:59 AM
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I had an outbreak of Diatoms in my 20 g. Three Ottos cleaned it up in less than a day. They are great little fish.

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post #7 of 8 (permalink) Old 01-20-2011, 12:35 PM
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Just ..wait
That is all. In 2 months at maximum ....they will be gone
But i muts tell you one thing. I have 4 tanks...3 started with default filter but for the 4th ..it was build by me with a huge air driven sponge filter (no diatoms in that tank right from the start)
And anothet thing. If the problem persists it is a probability that you have a high load of silica in your tap water. than....if that is the gase ..a RO unit is for you

DO NOT USE ALGICIDS...never
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post #8 of 8 (permalink) Old 01-20-2011, 12:51 PM
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+1 on the clean-up crew. Otos eat diatom algae like candy, and BN plecos seem to eat that and plenty more. Otos are cuter, though, and they will bounce around from leaf to leaf as well.
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