Chemi-clean vs cyano one shot wonder ?

[DEAD_BY_DAWN]

The problem is this i look after this guys tank,nice setup big euroreef skimmer plenty of lr low no3 low phosphates etc etc,so last month he got a outbreak of cyano,i tryed Chemi-clean and it worked wonders all gone withing 24hours,but now it's back the tests are all looking good but still it grows,i have redirected the outflows to bast more on the sandbed where othe problem is,it can be found no where other than the sandbed,another shot of Chemi-clean was tryed angd nothing happend well maybe a little dieoff but nothing like it was before,anyone have any thoughts on this matter ..thanks john

[Joe Reefer]

Do you have any macro algae in your tank?

[DEAD_BY_DAWN]

nope there is no room in the sump..

[danny zubot]

I've heard that PH can definately determine weather you get cyano or not. Mine stays a bit higher, around 8.3 and I haven't had an outbreak in over a year.

[shotzee]

I had a problem with cyano, and for the love of me I couldn't identify a obvious cause. I tried using that Chemi-clean and it delt with the cyano in no time and I haven't had a problem since (I used it 4 months ago).

[Chad]

a note about using test kits when we are facing outbreaks. The reason why the kit shows all is fine is because the nusiance algae or cyano is using all the nutrients up. Take all the bad stuff out and do the test again the next day. Your more likely to see the problem.