Chalice Trouble

[t00lfan]

I have 4 t5 ho actinics and 2 250 W MH 14k on my 90 and have had no problems with my chalices until recently where 2 of them are receding in the middle. My alk is stable from 8 to 9 everyday and my calcium is a little on the low end but never drops below 360ppm. I dose each day recipe 1 from BRS. I had it near the middle however the turquoise is fading and the center looks like it is receding a little on what may be the alien eye. I noticed today a 2nd chalice is doing this which is the red one I have pictured with the yellow eyes which almost looks as if it is chipped which I can assure you it isn't. My other chalices which are doing fine so I figure I must either have them too high or too low. Here is a pic of both of them in which you will see the receding which has me worried so any input would help. Has anyone experienced this before?

Here is alien eye right above pink birdnest You can see receding where plug is. 3 weeks ago u could not see the plug at all because it was bigger in that area.

 

[purplereef]

Try Interceptor. You might have those dreaded little black bugs eating your 2 chalices.

 

[mscarpena]

Black bugs would effect all LPS. I would say check your mag and maybe too much light. How long have you had them. Did you change your bulbs or lighting.

 

[roblack]

Def check ur mag and slowly bring that Ca up.

 

[t00lfan]

My mag was 1200. I brought it up to 1270. My calcium I am attempting to bring up since it is hard to dose so much since my corals and clams take up so much.

 

[purplereef]

Yep, I had a total turn around with one of my chalices after I dosed interceptor. Try it it might just work for you as well.