yeah it's hard to see but a 2--3 tips on each ones tentacles have brown spots on them. I just checked all parameters and they match what I said above.. .except that calcium is actually at 400.
Only thing I can think of is the MH
light... they have always been in the same spot but the bulb is now going on about a yr old so I guess it's time to change.......it's probabl a long shot that that is what's causing the prob though.
something is up though... they never had those spots before.... guess I'll check them out more in the A.M.