Mushroom is very weakness

[Saieditc]

Hello my tank is full sps and lps
My mushrooms be very weakness and be small
Why??
Which parameter or element are influenced in mushrooms ? Help me
Kh 6.2
No3 5
Po4. 02
Ca 480 mg 1230

 

[Tahoe61]

I would start with correcting the chemistry to normal saltwater values, alkalinity is too low and mag could increase to 1350. Please see link below.

http://www.reefkeeping.com/issues/2004-05/rhf/index.php

Mushrooms/Corallimorpha do not requires intense lighting. They may appear shrunken and detach under intense lighting.