zoa's colour washing out?

[elias123]

iv got 3 frags of the same green zoanthids, but lately all three of them are looking really washed out and not opening like they use to? ive got a variety of coral which all look fine....... can anyone help? thanks

 

[jeremyreef]

what are the parameters of your tank? are the zoas all in the same area? sometimes a certain coral can give you a warning that something is up. anything on or around them that could be irritating them?

 

[elias123]

no there at 3 diff spots in the tank. no, ive got no snails no star fish or anything like that....... i did notice the other day that part of one frag was lookn alot greena.. so i hope it continues.... thank you

4ft x 2 ft x 18
water parameters:
ph 8.2
kh 7-8
ca 420
mg not sure
nitrate 0 or close to
phosphate 0 or close to

 

[manhorsedog]

did you get new lights or bulbs recently?

 

[geoxman]

more info on the setup and pictures would really help

 

[elias123]

nah nothings different i dnt no?
they started colouring back up again, but i dnt know ill wait and see.....
ill post a pik wen i get mini..