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Old 01-13-2013, 06:42 PM   #1
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Cyanobacteria from hell!

My tank has been flooded with cyanobacteria! It's a 20 gallon FOWLR with 1 blue damsel, 1 pj cardinal, 1 coral banded shrimp, 2 bluelegged hermit crabs, and 1 hawaiian feather duster. I've always had a bit of a cyano problem, since the tank was first cycled. It's about 6 months old.
Any way I can get rid of it? It's super ugly.
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Old 01-13-2013, 07:12 PM   #2
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Let's talk about the tank: What are your water parameters? NO3, PO4 particularly?

What kind of flow do you have?

Is the cyano growing in a low or no flow area?
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Old 01-13-2013, 07:18 PM   #3
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We do have a good article on it in our SW articles section.
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Old 01-13-2013, 07:23 PM   #4
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Ammonia: 0
Nitrite: 0
Nitrate:0 (odd?)
I have a powerful HOB filter, with 200 Gph, and a power head with 170 gph. It's grows in high flow areas. Especially in the front.
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Old 01-13-2013, 07:26 PM   #5
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egads! That is some prolific cyano

I would recommend erythromycin treatment for a case that bad.

API E.M. Erythromycin Anti-Bacterial Fish Medication - Freshwater - Water Care - PetSmart

You need to manually remove as much as possible before hand though because as it dies off, you will have ammonia and nitrate spikes if it is allowed to sit in the tank.
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Old 01-13-2013, 07:28 PM   #6
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Here is the article Melosu mentioned. Lots of good info in it:
Cyanobacteria, AKA Red Slime Algae - Aquarium Advice
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Old 01-13-2013, 07:39 PM   #7
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Ive been using tap water treated with prime. Maybe that what it is?
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Old 01-13-2013, 07:40 PM   #8
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Very well could be. Tap water can often lead to problems in a SW tank. There are folks who do it with great success but it is very dependent upon your particular water supply.
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Old 01-13-2013, 08:06 PM   #9
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Dont feel too bad because im on the same boat but not as bad.. "Always" have it my tank and im using gfo but doesn't solve the prob.
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Old 01-13-2013, 08:20 PM   #10
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There's no places that sell Ro/Di in my area, and I don't feel like buying am expensive ro/di unit. Would bottled water work?
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