Green Star Polyps Help!! WHITE STUFF ON IT

[Gilzo]

hey,

have added some pictures
it haven't been open entirely for days maybe weeks(around 2)

generally my star and zoanthids stoped opening for some resont.

the parameters are fine, all other corals look ok+

 

[vpoiu1263]

hey,

have added some pictures
it haven't been open entirely for days maybe weeks(around 2)

generally my star and zoanthids stoped opening for some resont.

the parameters are fine, all other corals look ok+

I got this kind of things , and yellow one on mine too.
I think it's some kind of sponge.

 

[DSC reef]

Looks like sponge growth. Easy to remove with a soft toothbrush. I know you said your parameters are fine but with both corals closing like that I'd suspect a swing in chemistry, etc. I've got sponge growing everywhere and it doesn't seem to bother our GSP or zoas.

 

[Gilzo]

Looks like sponge growth. Easy to remove with a soft toothbrush. I know you said your parameters are fine but with both corals closing like that I'd suspect a swing in chemistry, etc. I've got sponge growing everywhere and it doesn't seem to bother our GSP or zoas.

i started using 2 little fishes A+B and amino a few weak's ago, could it be it?

 

[DSC reef]

Are you testing your parameters to see how much to dose?

 

[Gilzo]

Are you testing your parameters to see how much to dose?

alk was around 8
cal was around 400
ph 8.1

mag i didn't test yet, will test today

 

[DSC reef]

If there's large enough swings then it can definitely upset corals. Typically you want to test often to find out how much your tank depletes/uses alk, calcium throughout the day and dose only what's needed to keep levels stable. Most of the time magnesium isn't needed with regular water changes but it's good to test anyway.