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Old 02-01-2013, 06:00 PM   #1
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Cyano and air bubbles coming from substrate.

Two posts in two days, not a good week. I've had a problem with red cyano on my fine gravel bed for a few weeks and eventually it covered the whole of the substrate. I checked water parameters and all checked out fine. I use ro water and do regular water changes. I have started using rowa phos and the cyano has started to recede a bit.think my turbo and hermits have eaten it a bit( which I didn't think they did.) I recently upgraded the light from two t5's
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Old 02-01-2013, 06:12 PM   #2
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Sorry forgot to finish message, I just recently upgraded my light fro 2x t5 's and are running them and a halogen one now. Although I have been weening my corals on to the halogen light.
But recently the last two days there has been a lot of bubbles on the substrate,live rock and cyano, is this good or bad?
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Old 02-01-2013, 06:18 PM   #3
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Is the RO water also DI - it is important to have both RO/DI too make sure the Phosphates are not in there.

One way that may be able to distinguish is a TDS meter.
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Old 02-01-2013, 06:29 PM   #4
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I will have to check that with the lfs .is the bubbles from phosphates leaching out
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Old 02-01-2013, 06:32 PM   #5
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Sometime bubbles are released as a wast product from algae - Usually Nitrogen, which is not harmful.

The algae growth is caused by phosphates
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Old 02-01-2013, 07:12 PM   #6
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This is common with fine sand I used to have this problem when I was willing to deal with all the problems fine sand causes. I found this happened when I didn't have enough flow.
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Old 02-02-2013, 07:13 AM   #7
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Quote:
Originally Posted by chenzo9999 View Post
Sometime bubbles are released as a wast product from algae - Usually Nitrogen, which is not harmful.

The algae growth is caused by phosphates
I have 2-3mm substrate and had the same issue at the beginning of the cycle. I believe depending on the nutrients the cyano grows off it releases gases or now.

Just saying it can also happen with course sand/substrate.
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Old 02-02-2013, 05:28 PM   #8
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I would invest in a RO/DI unit that way you know the TDS is zero. Then treat the tank like you have high NO3&PO4
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