Possible Blue-Green algea in MTS tank, help please
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Old 09-19-2013, 01:44 PM   #1
Hmt321
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Possible Blue-Green algea in MTS tank, help please


Over the last week I have had what I think is a Blue-green algea bloom in my MTS tank.

pictures:





all the information needed about the tank is listed in the tank journal here:http://www.plantedtank.net/forums/sh...d.php?t=390281

This is what I will do this weekend:

- more intensive sand vac than normal (more WC)
- clean canister filter real well (but preserve BBB colony)
- get more floating plants (the Water Spangles Salvinia Minima did not do well, but i have a free, unlimited supply of it.)
- trim the BGA off of any plants.

I cannot see that this will increase the BGA growth.
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Old 09-19-2013, 02:52 PM   #2
ua hua
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Treat it with Erthromycin and it will be gone in a few days.
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Old 09-19-2013, 04:32 PM   #3
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Quote:
Originally Posted by ua hua View Post
Treat it with Erthromycin and it will be gone in a few days.
Is the algea in the tank BGA? I think it is but i want a positive ID.

I have read about Erthromycin:
- How will it effect my bacteria colony in my filter?
- What about snails, and shrimp that may still be in the tank?
- Anything else i need to know about it?
I am nervous about using an antibiotic. I going to do some reading on it.

Thanks for the reply.
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Old 09-19-2013, 06:39 PM   #4
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It is BGA.
Spot dose it at close range (with the filter off & water level lowered) with common household hydrogen peroxide (H202), using a plastic syringe or test kit pipette. It will bubble up and disappear overnite. Then you'll need to step up your tank cleansing routine (vacs) and increase/improve your water circulation within the tank to eliminate 'dead spots' - I use a small water circulation pump for this - a Hydor Koralia does an excellent job.
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Old 09-19-2013, 07:39 PM   #5
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I can add a power head, i am unsure if water movement is the problem.

I dump danphia and frozen bloodworms in front of my filter outflow and it blows them across this area. Can't see that it will help.

I have tried to use H2O2 before with pour results.

How will it effect the dwarf Sags that are around the affected area?

I am much more confortable usuing the H2O2 than the Erthromycin
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Old 09-21-2013, 12:00 AM   #6
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OK i dosed H2O2 into the tank.

I would say that i applied approx 35 ml, directly to the BGA with an eye dropper.

in about 5 min tons of bubbles were coming up from the sand.

the fish do not seem to be affected nor the plants (it may take a few days for the plants)

I purchased a powerhead and put it in the tank.

we will see how this goes
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Old 09-21-2013, 01:07 AM   #7
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I have not had any luck treating BGA with H2O2 but others have said they did so I guess if it works for you then great but if not then I would go the Erthromycin route.
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Old 09-21-2013, 11:49 AM   #8
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I vaced the sand and the tank looks a lot better.

If anyone has any info on the dosing amount for Erthromycin, i would be interested.

I am unsure if i would need the full dose to kill the BGA
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Old 09-21-2013, 12:19 PM   #9
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A half dose has always worked for me.
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Old 09-21-2013, 04:25 PM   #10
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Lack of suitable water circulation in the lower parts of the tank is often one of the root causes of BGA developing in a tank.
H202 shouldn't affect the dwarf sags.
All the bubbles indicate the H202 is working - you should see a large improvement overnite - if the BGA hasn't fully disappeared, repeat the treatment once more.
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