Something is killing my corals

[sandfan85]

I’m confused as to what’s going on with my mixed reef I’ve recently been losing several corals including some acro’s, ceptastria and and now some zoas. All my parameters are in check and have been consistent. The only thing I’ve recently changed would be my salt. A couple months ago, I switched from Reef Crystals to Tropic Marin Pro. The reason for switching was to get my dkh around 8.0 Not sure if it’s the salt or not. I will add thatrecently got a frag online and now I’m infested with vermitid snails. I have so fricken many, I can’t get rid of them all. Whenever I feed my coral there are spider webs everywhere. I sent out an ICP test and it came back fine too (iodine low). Everything else was in range. Here are the basics of my system. I’m also starting to get white spots all over my live rock. Not sure if it’s calcium precipitation or ??

120 tank 20 gal sump
13 months old
Radion XR15’s with T5 hybrid fixture
Cal Reactor
Dkh 8.0 - 8.2
PO4 .03
NO3 5
Calcium 430
Mag 1300
Salinity 34.5 - 35.5 fluctuates throughout the day
ph 8.26

Any thoughts would be appreciated

 

[MTBake]

Can you post pics of the white spots and corals that are in trouble? That could help us see what's going on. Not seeing any red flags as far as parameters.

 

[sandfan85]

iPhone camera

 

[Charlie’s Frags]

Are you carbon dosing or using gfo

 

[Skynyrd Fish]

ICP negative for metals? How about stray current? These are just ideas to shake down.

 

[SeaDweller]

some of those look like vermatids (just like you thought) to me and they can irritate your corals.

 

[Charlie’s Frags]

I’ve had vermatid snails irritate some Sps and others have just grown right over them. My bet is either your corals are starving from not enough light, fish poop or both.