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Old 03-24-2008, 04:28 PM   #1
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diatom

I got behind with my partial water changes on my 38 gal sw(fowlr) tank. Everything is covered in brown diatom. LFS said i needed a new light. So i just got that. Now to get rid of the diatom, any products out there that are good? I keep the glass clean as best I can but it would look nicer if I could get a chemical.
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Old 03-24-2008, 04:36 PM   #2
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Are you using tap water? Tap water is sometimes high in silicates.
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Old 03-24-2008, 04:44 PM   #3
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"Nicer" is not necessarily "better." Adding chemicals should always be a last resort, not an initial response.

Do you have snails? A good cleanup crew of 20-30 snails (astrea and trochus) will take care of the diatoms pretty quick. Even without the snails, the diatoms normally burn themselves out of food pretty quick.
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Old 03-24-2008, 07:05 PM   #4
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Yes, I use tap water. Is RO the only other option?
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Old 03-24-2008, 07:18 PM   #5
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You can get distilled water at the grocercy store, but nothing beats having your own RODI unit.
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Old 03-24-2008, 07:20 PM   #6
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You can get distilled water at the grocercy store, but nothing beats having your own RODI unit.
Do you have any suggesstions for a cheap RODI unit? and is it worth getting for only a 30 gal tank?

does this count?

Aquarium Water Quality: Tap Water Filter
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Old 03-24-2008, 09:04 PM   #7
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I would go with an RO or RO/DI unit. You can get some good prices on Ebay. Here is something to read about tap.

Chemistry and the Aquarium
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Old 03-25-2008, 02:34 AM   #8
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Do you have any suggesstions for a cheap RODI unit? and is it worth getting for only a 30 gal tank?

does this count?

Aquarium Water Quality: Tap Water Filter
That would work. All it is is the DI stage of a RO/DI filter. It'll give you pure water, but you'll go through more $$ over time versus the RO/DI option. Depending on your source water, you could get 100g out of it... or 25g. It just depends on how dirty (TDS reading) your water is to start with. But the water coming out of it would be no different than RO water.
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Old 03-25-2008, 09:29 AM   #9
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That unit will end up costing a fortune in the long run. It says you get 50 to 150 gal before the resin is exhausted. At $20 a pop for the replacement cart, this unit is not very cost efficient.
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Old 03-25-2008, 02:52 PM   #10
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I agree on that cartridge unit. Too expensive to run. Check on eBay for a unit that costs about a hundred dollars.
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