Frogspawn keep melting... Help
 

I have a 120g tank that has been set up for 3 months....

I have two frogspawn that i've had for two months that are healthy but when i introduce any new frogspawn or hammer, they melt within a day......

Here are a couple pics to show the progression of the last one i introduced. I love these coral but hate losinging them as i've tried several times to add more. each time with the same fate as this one.

All start the same...
2 hr aclimation
start to shrivel on intro to tank
white slime starts to string across
begins to recede at the base
several hours later the skeleton is exposed and its' all over :(

Nitrate 0
Amonia 0
Nitrites 0
KH 9
PH 7.85
temp 79F

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what are you using for lights??

I have a 72" coralife PC's 588W total

What's you're salinity at? May also want to raise the Ph with some buffer. They are usually pretty hardy but maybe they were already in decline before being added to your tank.

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Salinity is 1.023

I just bought a calcium reactor to try to bring it up

but i've been dosing twice a week with reefbuilder.

The strange thing is, i have two frogspawn that are pretty healthy since the beginning.

when i add zoa's they do usually close up for a couple days to a week before the fully open and start getting good colour.

Likely gets damaged in transport. If the frogspawn is not deflated as it is removed from the tank then the water it holds can weigh heavily on the tenticles causing a tear. They just may not recover after that.

I really want to believe that buy i've gone through this 4 times and take extra care, even floating them to get them home without rips....

here's a pic of one i've had for a while.

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My thoughts would be too much flow.

LPS prefer lower flow and almost any light is sufficient.

thats not good either zoas should almost open immediately ,thats also a sign something is off.

My thought would be the ph, have you checked the ph of the water your frag was in prior to putting it in the tank. If it was at say 8.2 to 8.4 then goes into your tank with a ph of 7.9, that is a huge swing. The corals that are in there already probably got used to the declining ph over time.

Not sure why your ph would be so low. Something is causing your water to be too acidic, hopefully someone can chime in on that.