need help

[igk]

Hi. need advice my frogspone coral slowly loose all the heads .
try to understand why .
my parameters are
temp 24.5 C
kh 7.7
no3 10
ca 420
mg 1360
po4 0.01 i dont think it corrects. i have some hear alge
salin 1.025

 

[Mr. Mojo Rising]

Can you post some pictures in white lights? Seeing will help a lot. How old is your tank? Do you have other corals in the tank, how are they?