whats killing my lps

[tangtang81]

i have attempted for way too long without figuring out what is killing these.
my lighting is 3x250 phoenix14k (8 a day)
i have tried and for some reason am unable to keep the follwoing ...frogspawn, brains, ridgecoral, hammers, australian elegance, galxae etc

Here is what is doing great: anemones, leathers, xenia, star polys, other polys, zoos, maxxima clams etc

amonia is 0
nitrate is 0
nitrite 0
phosphates between 0 and 0.5
calc 400's
alk 7

I just recently bought a green candy coral and red brain coral frag ...the tissue started to pull off within 2 weeks.

I'm wondering if im burning these .... im just snot sure what the problem is and its weird that my clams are thrieving yet i cant keep a frogspawn.
I started these out in the lower portion of the tank (22inch deep)

 

[Shane Hoffman]

I am keeping frogspawn and two other corals you have had die under a hamilton 3x250 14k. My parameters are almost identicals to yours except alk is at 9 and calcium at 420.

Have you given any thught to your leather poisoning them....i.e chemical warfare.

I dont have any leathers but have everything else you have........

 

[tangtang81]

yes but why is it just lps....are these more sensitive to light acclimation than other corals?

 

[100%hydrophylic]

he suggested its chemicals from your leathers. i kinda disagree with that suggestion, but do you run any chemical filtration? ive never really had leathers poison anything unless they get too close. but then again i do run carbon.

 

[tangtang81]

just phosban...the leather were not really too close to those mention corals

 

[tangtang81]

also ...several times i had the problem that the brain and frogspawn would detach from skeleton and still look perfectly health (fleshwise) ...
i have a grouding probe ..... i supplement with reefsolution

 

[jerryreefrigger]

This might be a stupid question, but do you happen to have an angel fish? Mine was secretly attacking my frogspawn while I wasn't looking.

 

[tangtang81]

no angel fish....blue tang, clown tang, yellow tang and 2 clownfish

 

[grego]

It could be a tang, I've seen one bitting.

 

[luther1200]

What about shrimp? Do you have any?

And I think it could absolutely be "chemical warfare". I had a large Sarcophyton that was wreaking havoc on my tank. I was chasing problems for about 6-7 months before I suspected it. And I have not had a single problem since I removed it. So it could be your leathers. Try running a quality carbon in a reactor and see what happens. Unless you already do, then I would either run more carbon or look some where else.

 

[nicknguyen]

I would say to raise your alk a little and put them in a lower flow area. they don''t like lots of current.

 

[tangtang81]

ill try the carbon for now....im not running any