Tropical Fish Keeping - Aquarium fish care and resources

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-   -   green spots? (

Blaxicanlatino 09-13-2008 12:14 PM

green spots?
I have this green slimy stuff growing all over my tank. How do i get rid of it?

okiemavis 09-13-2008 04:19 PM

It depends, do you know what kind of algae it is? It sounds to me like you have cyanobacteria. That can be caused by a lot of different problems...excess light, excess nutrients, etc. There are products that will take care of it, but cyano grows really fast, so it'll just come back unless you take care of the underlying problem.

Blaxicanlatino 09-13-2008 09:04 PM

i think it is too, how do i get rid of it natuarlly? I searched but some info seemed it bit...well not good. I stopped adding ferts for awhile and I cut down the lights only 8 hours a day.

willow 09-14-2008 04:34 AM

when did you make these changes ?
it might take a while,possibly the next thing perhapes
would be a total black out ?

jeaninel 09-14-2008 02:21 PM

Is it blue green in color? Is it pretty easy to remove and kind of come up in clumps like a carpet? If it is cyanobacteria try just removing it manually. I had it in my 10 gallon tank and it will spread fast if you don't catch it right away. It was growing on the surface of my sand as well as on the rocks and sides of the tank. I sucked it up from the sand with a turkey baster and removed the rocks and rinsed them really well and wiped down the sides of the tank. Each time I saw a spot returning I removed it. It took awhile but now my tank is pretty free of it.

Blaxicanlatino 09-14-2008 02:47 PM

it grows on the glass sides of the tank and only comes off if i scrape it off. Its a very dark green color and seems to grow in the filter exit as well.

okiemavis 09-14-2008 05:02 PM

Hmm, if you have to work to scrape it off, it's not cyano. Cyano comes right off when you touch it.

Blaxicanlatino 09-14-2008 07:20 PM

could it be blue green algae then? Its been there for awhile now. I think the oto eats it also, but there still alot of it in the tank and is still growing

jeaninel 09-14-2008 07:31 PM


could it be blue green algae then?
Well no, cyanobacteria is blue-green algae. If it's hard to scrape off the glass it sounds like green spot algae. I don't know if any fish eat it. Scrub it off with an algae pad.

Blaxicanlatino 09-14-2008 09:35 PM

hmmm, my I dont feed my oto often but hes always constantly pooping a dark green fecal matter. And the ghost shrimp eat it when i scrape ot off the fitler.

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