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JoshuaG · 11/09/2010, 12:46 PM

My tank is going on two months old now, have been battling a pretty bad cyano issue for the past 3 weeks. I have zero fish in the tank, am not feeding anything. 20% water change every week, 0 TDS water, running GFO and still cannot kick the cyano out of the tank.

I used mostly dry Marco rock for the tank with a few pieces of live rock, I did nothing but a rinse on the marco rock. What is feeding the cyano? It's driving me crazy. I tried the no light for 2-3 days but the cyano I have seems to grow overnight and disappear in the day.

Anything else I can do before I resort to chemi-clean?

Tank is 125G, two MP40's with Ehiem 1262 return, SWC 160 skimmer.

11/09/2010, 12:46 PM	#1
JoshuaG Registered Member Join Date: Jun 2009 Posts: 1,307	Cyano in new tank My tank is going on two months old now, have been battling a pretty bad cyano issue for the past 3 weeks. I have zero fish in the tank, am not feeding anything. 20% water change every week, 0 TDS water, running GFO and still cannot kick the cyano out of the tank. I used mostly dry Marco rock for the tank with a few pieces of live rock, I did nothing but a rinse on the marco rock. What is feeding the cyano? It's driving me crazy. I tried the no light for 2-3 days but the cyano I have seems to grow overnight and disappear in the day. Anything else I can do before I resort to chemi-clean? Tank is 125G, two MP40's with Ehiem 1262 return, SWC 160 skimmer.