Corals closing up everyday

[Zbass]

I have mostly Acans and Zoa's is the tank and one leather and one Nem. no the Nem isn't stinging anything. when the light first comes on in the morning everything opens up and looks great then after about 2 hours they seem to all start to close up. the Acans look ok just not as fat as usual, but something is deifinitly affecting all corals. I just treated it for CYNO a couple of weeks ago but I did a 50% water change. corals were already acting funny before I treated the tank. I jut now put some carbon in to see if that does anything. and before you ask all of my elements have been tested and are great. My nitrates are like 7 wish they were higher but they have been like that along time.

 

[20gallonreefer000]

I have mostly Acans and Zoa's is the tank and one leather and one Nem. no the Nem isn't stinging anything. when the light first comes on in the morning everything opens up and looks great then after about 2 hours they seem to all start to close up. the Acans look ok just not as fat as usual, but something is deifinitly affecting all corals. I just treated it for CYNO a couple of weeks ago but I did a 50% water change. corals were already acting funny before I treated the tank. I jut now put some carbon in to see if that does anything. and before you ask all of my elements have been tested and are great. My nitrates are like 7 wish they were higher but they have been like that along time.

Does your light ramp up in the mornings? If they start closing 2 hours after the light turns on it could be too bright. Have you made any changes with them recently, and what do you run them at?

 

[Zbass]

Does your light ramp up in the mornings? If they start closing 2 hours after the light turns on it could be too bright. Have you made any changes with them recently, and what do you run them at?

I actually have. I didn't even think of that. so I dropped the light down. I was getting as high as 400 par the top and I brought it down to 285. we will see what that does. I can't believe I didn't think of that. thank man!!

 

[20gallonreefer000]

I actually have. I didn't even think of that. so I dropped the light down. I was getting as high as 400 par the top and I brought it down to 285. we will see what that does. I can't believe I didn't think of that. thank man!!

No worries at all :)