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Old 07-23-2013, 05:09 PM   #1
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help to understanding diatoms.

Alright here is my issue. My tank is over 6 months old. So its not completly new. When I do a water change I get diatoms, why? I tried to research it but allbi come across is diatoms during your cycle. I dont understand why this happens when I do water changes. I thought the water change would take out nutrition from uneaten food. Which can cause diatoms, right?
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Old 07-23-2013, 05:18 PM   #2
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You might have a diatom bloom, I have a 6 month old tank with the same problem
Diatoms feed off from oxygen, nitrate, and silicone
Even after about 10 months, the silicone from the edges is still released a bit, but after a year it should clear up, or maybe you have high nitrates, hope this helps
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Old 07-23-2013, 05:34 PM   #3
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Thanks.
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Old 07-23-2013, 05:46 PM   #4
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Test the new water before you do the water change.
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Old 07-23-2013, 05:54 PM   #5
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Could be silicates in the water you are using.
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Old 07-23-2013, 06:51 PM   #6
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Quote:
Originally Posted by MMantelli View Post
Could be silicates in the water you are using.
+1 That was my 1st thought Where are you getting the water from
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Old 07-23-2013, 07:04 PM   #7
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My rodi
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Old 07-23-2013, 07:17 PM   #8
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How old are the filters? Do you have a TDS meter? When my filters get old i get crazy algae blooms
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Old 07-23-2013, 07:18 PM   #9
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It says 0.04 in 0.00 out
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Old 07-23-2013, 07:41 PM   #10
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Not silicon (as in the sealer) its silica or selenium. The diatoms outer shell is composed of silica (sand). Many salt mixes have high selenium content. I use Purigen to remove selenium and have not seen diatoms for many years. Tap water can really set off a batch of it.
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