diatom or algae control? - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 4 Old 02-16-2011, 04:59 AM Thread Starter
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Question diatom or algae control?

I have diatoms present in my tap water and algae and diatoms grow all over my substrate, walls, and decorations in my tank.

I was wondering, are there any catfish that can live in a 10 gallon with 5 pygmy cories and a male Betta that'll clean up the stuff? As far as I know, the cories don't eat it, so I was just wondering.

If guppies are jewels, than Bettas must be rainbows

Proud owner of Neon, Ryu, and a still unnamed CT
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post #2 of 4 Old 02-16-2011, 05:04 AM
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I don't advocate using fish to clean up the diatoms. It should go away on its own. It tends to proliferate in new setups and presence of high silicates.

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post #3 of 4 Old 02-16-2011, 05:14 AM Thread Starter
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I had been planning on getting zebra nerite snails for it, but they wouldn't be happy with sand substrate.

And it's the silicates in my tap water. Ufortunatly I have a saltwater setup with great params that is nearly a year old and it still has them /= So that's why I assume it's in my tap.

The reason I was considering fish is because the diatoms tend to grow deep into the sand bed (So if you stir it they'll reform after about 30 minutes...) and form on hard to reach places. Of course I'd research to see if I could manage to care for that fish and if it would be compatible. But, I'm guessing there aren't any fish like this? If not I guess I'll have to go for a substrate that zebra nerites would like better.

If guppies are jewels, than Bettas must be rainbows

Proud owner of Neon, Ryu, and a still unnamed CT
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post #4 of 4 Old 02-16-2011, 01:22 PM
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I certainly agree with Lupin. However, if you really have diatoms from tap water then a fish is suitable. Otos will devour diatoms, as will Farlowella and many pleco. But a 10g is too small for plecos (in my view), but a trio of otos would work. They are shoaling, so 3 is minimum. And with diatoms (or common green algae) present, they will setlle in happily. They will control the diatoms, and get accustomed to tablet food (such as you feed the corys) if they get hungry and once they are settled.


Byron Hosking, BMus, MA
Vancouver, BC, Canada

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Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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