yellow zoo prob...are they dying?

[tonysearsjr]

my yellow zoos ave always been overly flush and in past few days ive noticed that they are shrinking and fast. they also have a redish hue to the base. does anyone have any ideas? water par all test all okay nothing abnormal everything elseis doing fine

[Chris]

Any pics? Do you dip for pests?

[tonysearsjr]

this pic was them before

[tonysearsjr]

this one is the most recent, the red at the bottom is alot more now...sry for the junk pics. and no for the dip heard good and bad but never tried any. also can you ID the pinkish white nub just left of center on bottom? it grew from rock...

[Chris]

Have you changed lights recently, they don't look as stretched for light. Looks like you probably have a cyano problem which could be bugging them (and anything else in the tank) as well as some algae issues. I would increase flow, run carbon/gfo, do a lights out period for a couple days and maybe pick up a couple snails if that doesn't help...... and no lights out for 2-3 days will not cause any major damage to most corals, as long as you don't do it often.

Not sure on the "pinkinh white nub" possibly a type of sponge.

[tonysearsjr]

hey thanks for the help gonna try the lights idea and cyano in tank is minor BUT it is there starting to lean towards gfo reactor i think