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Old 01-11-2009, 10:05 PM   #31
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any sand sifters can create a problem. the sand bed is divided into layers as it applies to the nitrifying bacteria, there are anaerobic & aerobic bios, one uses oxygen and the other does not. when the sand is stirred the bacteria become skewed. trapped po4 is brought to the surface to be dissolved and the nitrate is also released be for it can be changed to nitrogen. the Gobi is a problem, do not stir or vacuum your sand, let it set, the micro flora and benthic lifeforms will take good care of it.
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Old 01-11-2009, 10:10 PM   #32
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diatoms do not"burn out" until all of the free silica in the tank are used up, which is usually fairly fast, (their cell walls are made up of silica.) but that is another long story.)
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Old 01-11-2009, 10:19 PM   #33
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brad as I stated if po4, no3 are contained in the items the crew eat then those same nutrients will be excreted at about the same strength that they had when ingested
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Old 01-11-2009, 10:55 PM   #34
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All post that did not pertain to the OP question were removed. Please do not post several post that could be in one post. Thank you
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Old 01-11-2009, 11:08 PM   #35
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Quote:
Originally Posted by rugie View Post
brad as I stated if po4, no3 are contained in the items the crew eat then those same nutrients will be excreted at about the same strength that they had when ingested
if what you say is true.. why would anyone have a turbo snail.


i always thought the snails decreased PO4 and increased No3 in the stuff they consumed...

-Brad
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Old 01-11-2009, 11:54 PM   #36
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algae and cleanup crew

In my tank the cleanup crew clears all the algae on the surface of my sandbed. But, the algae quickly returns, esp. when lights are on.

I am including a pic of my whole aquarium. Is it overloaded? Several coral have spread since purchase. How do I limit their growth?

Next I am going to run my skimmer 'wet'. I would like to increase h2o changes but doesn't make sense if I am just adding phosphates. I am going to contact the company that makes my filter and see if they can help. I might also buy a different test kit, just incase.
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Old 01-11-2009, 11:56 PM   #37
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those still look like diatoms to me... maybe you have silica coming from somewhere?
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Old 01-12-2009, 12:03 AM   #38
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Do you know of a way to measure silica levels and its source in an established aquarium?
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Old 01-12-2009, 12:06 AM   #39
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I`m not saying it`s not diatoms. It very well could be. but I have seen cyano start out looking like that also. As far as the tank make sure that you have several inches cof space between the LPS corals. They have sweepers that could harm other corals.
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Old 01-12-2009, 08:08 PM   #40
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Ok, I contacted the company that manufactures my RO/DI system and was asked to test the TDS and Phosphate at: my tap, after the membrane, and after the DI stage (the 'clean' water). Here is what I found:

TDS Phos
tap 263 0.25
membrane 11 0.25
DI 0 0.25

Well, so good job eliminating TDS, but not so much for phosphate......
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