What can affect P.E. ?
 

I am looking for some ideas into my recent lack of PE. Everything was fine up until about 1 month ago, had PE up the wazoo. Now I have almost nothing, not even my Milli's, they just look pretty much like bare sticks. At first I thought maby everyone was taking a little break, but it has been at least a month now. Not everything is affected, it seems to be only the Acro family. All of my Monti's, birdsnests, polli's etc are growing great and have great PE.
The Acro, Milli, Prostrata, etc have virtually nothing in the PE department but all have great colouring and amazing growth. At night the big polyps on the tips come out in full force but the rest of the coral is pretty much pathetic. The polyps are there just really small.
All of my parameters seem good and I have increased my WC to 15% per week but its not helping. Running new Carbon and GFO also.
Initally i thought it was related to a possible overdose of Mag or the addition of fresh garlic to the food but both items have been corrected. Also I have looked very carefully for parasites but have found none.
I am open to suggestions and ideas.

PE up the wazoo! That's gotta hurt!
Darren I have this same thing happen every now and then for no apparent reason. Do the Acros have PE after lights out?

Darren what fish do you have? That's what first clued me when my regal angel started picking on corals

Yes but pretty much only the big ones on the tips.

That's just what I was going to say if PE is only after lights out. :biggrin:

PB Tang, Purple Tang, Kole tang, Lawnmower Blennie, True Perc Pair, Cleaner Wrasse, Coral Beauty. I spent alot of time watching the tank to see if there was a coral snacker in there but nothing.
Funnily enough the first coral I noticed was the one I got from you. Purple acro with big amazing green polyps. It was doing absolutely fabulous, growing like crazy, PE so big you almost couldnt see the purple. Now its a purple acro with teeny tiny little green dots on it that dont even get any bigger even after lights out. Christys frag is doing great but I think mine is more purple.

If it is a fish bothering your corals, I would suspect the Coral Beauty.

Also I had all of these fish except for the PB before it happened and it was like an overnight occurance.

I did too but have watched it very closely and never seen it pick at a coral, only the rocks.

My Coral Beauty tends to nip at my Brains if I don't keep him fed enough.