Mysterious pink substance on sand

[sheyandpete]

After I added corals to my marine tank I placed the coral frags onto my sand and have noticed what seems to be a pink area where they have been placed on the sandbed. Since I moved them I have noticed large areas of my sand covered in the same pink substance. I have added photos and am a little concerened that this could be cyano bacteria but I have been told it could also be coralline alage as I have traces on my rock as well. Could a helpful person help me identify this substance as I'm a relative newcomer to this hobby. Many thanks to all!

 

[Maritimer]

That's cyano.

Coralline is rather "crustier", and unlikely to grow across your sandbed.

~Bruce

 

[oscargrumete61]

You are right its cyano

 

[Maritimer]

Not unusual to see a brief bloom of it in a newer system.

Keep nutrient levels under control, and don't panic.

~Bruce

 

[oscargrumete61]

Do 50% of. Water change every week for at lest 3 weeks short light period , feed less, do not add more supp, and keep good water flow maybe you need rearrange your water pumps and vacuum your sand bed slso get some gfo