coral getting attacked?

[marineawe]

Hey fish peeps, :help:
I have some corals that seem to be getting attacked by something in my tank. The corals in question are 2 leather corals, blue xenia, staghorn(i think thats its name) and a pagoda cup. I got a couple of hitchhikers on some lr from my fav lfs...i think one is a porcelain crab and the other is anemone crab are these guys or one of them beating my coral up...PLEASE HELP

 

[ophiura]

Please provide more specifics about your tank - age, lighting, inhabitants and SPECIFIC water parameters. How long have you had these corals? There are many many things that can result in coral death...it is tempting to believe something is killing them, but I strongly encourage a review of all your parameters first.

 

[marineawe]

My tank is 150 gallon reef...its been set-up for a year, I have metal halides and water parameters are as follows:
ph 8.0
ammonia-o
phosphates-.25
rite-0
rate-0
salinity-.025
alk-1.8
ca-550
I have 2 hippo tangs, powder brown naso, 4 per. clowns, sailfin tang, foxface, assorted damsels, yellow tang, coco worm, 4 anemones, fire shrimps, cleaner shrimps, open brain coral, peppermint shrimps, 100 snails, 75 dwarf zebra crabs, 30 blue legged hermits, brittle star fish, white star fish, and a blue linkia star...thats the majority of reef contents. I have had most of the corals for at least a year some a little less...I hope this helps...THANKS

 

[reckler]

What do the corals look like when they get "beat up". Do the look like they are getting eaten on or just look like they are melting. If you can provide us with a pic or description of what they will look like it would be a little easier also.

 

[marineawe]

It looks like they are getting eaten and/or abused. I saw one of the crabs on one of my leathers and it made white spots evrywhere the crab's feet were and thats what all my corals look like now.

 

[crox]

IMO your Ca is a bit high.