I have 100 litres tank that has been up and running 4 months now, zoas were doing fine for weeks, all of a sudden 4 out of 10 Zoa polyps will not open and haven’t for over a week. Algae is present in the tank possibly film algae? Looks like it’s on a few of the polyps. Also red looking slim covering some of the GSP. Can anyone help?? Just removed a dead coral after hoping it would survive so after doing some research and realising this leaks phosphates into water I’m thinking could this be the reason for the zoas closing or maybe the KH? Parameters and pics attached.
Ph - 8
Kh - 6
Nh4- 0,05
N02 - 0,05
N03 - 10
P04 - 0,2
Salinity - 0.026
Ph - 8
Kh - 6
Nh4- 0,05
N02 - 0,05
N03 - 10
P04 - 0,2
Salinity - 0.026