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Old 04-22-2012, 05:44 PM   #1
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Cyano issues again

I have a 55 gallon reef and months ago I had a cyano outbreak. I tried lowering feeding and I cut my lighting times down to 4 hours with no sign of improvement. I eventually cleared it up with 2 doses of chemiclean.

Well it's back again and this time after 2 doses and 2 20% water changes it's still going strong. I only feed a small chuck of food every other day and all parameters are 0 including phosphates. For water changes I only use ro/di or the premixed salt from my LFS. It seems to only be forming on the sandbed where ever the light shines. I just upgraded to 4 t5 unit from coralife so the bulbs are brand new.

The only thing I can think of is that I went back to using frozen brine an even though I was rinsing it before feeding maybe that caused the outbreak. I am now using my home made food of cod shrimp and oyster

Any ideas or suggestions
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Old 04-22-2012, 05:59 PM   #2
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have you tried running GFO to bring the phosphates down?
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Old 04-22-2012, 06:43 PM   #3
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Maybe its not cyano.
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Old 04-22-2012, 08:08 PM   #4
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I have a new package of chemi pure that I was going to put in today to see I that would help. Skimmers bubbling and pulling out stuff. I've attached pictures of what I've got. I'm pretty sure it's cyano

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Old 04-22-2012, 08:18 PM   #5
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Yep thats it! I to ran chemi clean and it came back. Chemi clean is just a band aid. I am running gfo and doing a 3 day lights out. Hoping that when i turn the lights back on and the cysno is gone the fact that i am going to double my amount of gfo that the cyano will be gone for good by out battling it for phospates
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Old 04-22-2012, 08:22 PM   #6
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I don't think my corals (frogspawn, gsp, and toadstool) could handle a light out
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Old 04-22-2012, 08:37 PM   #7
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From what I understand cyano feeds on silicates.. Once their food source is gone it will stop, but you have to get the cyano out of the tank, it won't just go away... I thought cyano was more brown, that picture looked purple to me.
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Old 04-22-2012, 08:38 PM   #8
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They do in the ocean during hurricane season and mine are right now. 2 frogspawns, bubble tip anemone, toadstool, kenya tree. Xenia, mushrooms, zoa's, polyps, etc. many people seem to say the corals look better after lights out. Do some searches on it.
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Old 04-22-2012, 08:39 PM   #9
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That's it. Do you have any flow over your sand bed?

Also- any livestock that turns over the sand like nassarius?
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Old 04-22-2012, 08:46 PM   #10
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Quote:
Originally Posted by JustinKBreen
From what I understand cyano feeds on silicates.. Once their food source is gone it will stop, but you have to get the cyano out of the tank, it won't just go away... I thought cyano was more brown, that picture looked purple to me.
Diatoms feed off silicates, cyano is usually a result of low nitrates and high phosphates
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