<a href=showthread.php?s=&postid=11091029#post11091029 target=_blank>Originally posted</a> by Atticus
There was just a thread here in our forum on this about a week ago... Let me find it, but in the mean time it has been shown to be a chemical imbalance in your tank. Low Alk is a major cause, high phosphates, and nitrates are also possible links. I would also suggest looking at your magnesium levels as it is linked to the balance between Calcium, and Alkalinity.
<a href=showthread.php?s=&postid=11091514#post11091514 target=_blank>Originally posted</a> by slovan
Randy Holmes-Farley thinks it's a combination of things. I guess I'll take his word for it.
http://www.reefcentral.com/forums/showthread.php?s=&threadid=1056103
<a href=showthread.php?s=&postid=11091652#post11091652 target=_blank>Originally posted</a> by heartben
thanks guys. we actually bought a sump set up a few days ago, had trouble setting it up though... so now were going to repair a baffle (came loose, no biggie) and possibly replace the overflow... itd be cool to get one that sucks down about 950 gph as we got a mag 9.5 with the set up.
we have quite a bit of chaeto and some mangroves so.. i think after we get that rockin the cyno will go away... at least... im hoping so.
-ben