Brand new LED, now cyano outbreak

In the last 2 weeks I did 2 changes to my tank, I changed my t5 lighting to LED lighting, and added 2 turbo snails to my refugium. The reason for the snails is because I had some cyano in the refugium, thinking the snails could help by doing their walking on the glass thing could help. And it worked, the cyano is 90% down in the refugium. But now I have a massive cyano outbreak in the main tank, I'm talking red carpet variety. Could this be caused simply because of the new LED lighting and the tank simply needs to acclimate. The other puzzle is the cheato in the refugium has shrunk by 75%.

90g tank, 110lbs live rock, SSB, 5 fish(2 clowns,1 blenny,1redhawk,1marine betta) 30g sump, with mineral mud and shrinking cheato.
Phosphate 0.3 ppm nitrate 5-6 ppm

 

What are the specs of the LEDs? Do you know what kind of whites they used? That is why I do not like the lower K white LEDs, if that is what was used

 

maxspect mazzara s 7000-8000k cool white
blue 465-485nm
royal blue 450-465nm

 

IIRC cyano isn't photosynthetic.

 

The turbo snails could have just knocked some of the cyano in your fuge loose, and it worked it's way into your DT and spread.

Your phosphate levels seem a bit elevated at 0.3, which could be helping the cyano spread.

 

+1 8)

 

Yes it is. Which is why some people use 3 day blackouts to help rid their tank of it.

 

But I still don't understand why the cheato would shrink in size with both nitrate and phosphate present in the water

 

IME, cyano and cheato dont play well together. Typically, the cyano will outcompete the cheato for nutrients.

The cyano spread to your display because it wasnt allowed to thrive in your fuge (bc of the snails). I know this sounds crazy, but some people allow cyano to grow in the fuge, and just harvest it from time to time similar to cheato. Simply remove any cyano that appears in the display.

Allow the cyano to thrive in your fuge, and it will outcompete the cyano growing in your DT.