Sick coral

[TwoRivers]

We have some mushroom corals at first they were massive nothing in the water has changed we test weekly but Kh has lowered I'm waiting for my Kh buffer to arrive would lie Kh cause this failure to thrive? My pulsing zini is doing fine but my young green star polyp has also start to go smaller than it was. Just wondering if Kh is the cause. I think it must be as the other water specs are fine, I just worry like a mother hen over my little tank inhabitants

 

[54seaweed]

how low is low

 

[TwoRivers]

8.5 dipping to 7

 

[TwoRivers]

Should be at least 9 I know

 

[54seaweed]

I don't think
that small of a drop would have a impact on shrooms
mine shrivel up when weather is bad I can always tell a storm is rolling in just looking at the shrooms and some of the other corals in my tank

 

[TwoRivers]

Weird! Well I have the buffer now and everything is picking up. How quickly do your corals drain the Kh ?