What are the main contributing factors in a Cyno outbreak? Fix?

[Pan]

Originally Posted by angelfan

Looking for ideas to treat a recent cyno outbreak. Its in my 20 gal which has been stable for some time but I just moved. Nothing has been negatively affected but it won't go away and I don't really want to do a blackout. Is it phosphate? Any ideas are appreciated.

Something die you can't see...or have not noticed?

[mseepman]

I've been experiencing the same thing and the only idea I have as to what caused it was changing my lights. I recently modded an Aqualight pro to have the MH plus 4 T5HO's rather than the PC suppliments. When I went to get the T5HO bulbs, Mike at hidden reef convinced me to try some new ones he had (50K) and I'm suspicious that they are causing the problem.

[spreerider]

lights not only shift colour but they lose more then 50% of their light output in the first year, at least Flourescent lamps, MH keep brightness longer but lose their peak wavelengths and become a more ballanced light that turns more yellow and grows algea better.

[mseepman]

But do you think new lights in a spectrum we don't usually use (really high at 50k) would cause this?

[angelfan]

Originally Posted by 'Ol Nobodaddy

Something die you can't see...or have not noticed?

Nothing died, that I can find

[angelfan]

Maybe I'll pick up a new bulb and give that a try. Thanks for the help

[marie]

Cyano is definitely phosphate driven, if your phosphates are higher then usual then a new bulb will just make it worse. Moving could have released the phosphates from your rock and sand.

Are you running any phosphate removers? If not, now would be a time to start. Increasing the flow where cyano seems to settle will help as well and of course doing that good old standby...lots of water changes

[angelfan]

Originally Posted by marie

Cyano is definitely phosphate driven, if your phosphates are higher then usual then a new bulb will just make it worse. Moving could have released the phosphates from your rock and sand.

Are you running any phosphate removers? If not now would be a time to start. Increasing the flow where cyano seems to settle will help as well and of course doing that good old standby...lots of water changes

Sounds good. I just started with some phosphate sponge but I was unsure if that was the problem. Thanks! I thought I remembered reading that phosphate supports cyanobacteria growth but I wasn't sure. I'll let u know how it goes

[mseepman]

Thanks for the info, I will change up my phosguard tomorrow.

[angelfan]

36hrs of phosphate sponge and instantly all cyano is gone, even a little that was there when I put it in. Together with an extra water change it worked wonders, thanks for the help

Greg