Corals closed and losing flesh

[thisguy1]

Hey I was wondering if I could get some help. So a few days I noticed a hammer of mine is losing flesh after a few months of having it but noticed it a few weeks ago and don’t know why. Also noticed another is closed and not open/puffy like it usually is just for two days so far. And my one of my frogspawns tentacles have shrunken but I’ve read they do that when splitting and it’s actually in the process if splitting now into three heads. All my other corals are doing great growing new heads and everything just don’t know what’s going on. My parameters seems ok doing a water change tomorrow. Any help would be great. My tanks is the fluval evo 13.5. Also retesting my magnesium tomorrow to be safe

 

[lapin]

Im going to say lack of nutrients is not good.
They need Po4 and Nitrate

 

[Goaway]

I'm curious on the flesh loss, is it receding or losing polyps?
Also, can you count how many mouths the hammer has?

 

[Jekyl]

Agreed tank needs to be dirtier. Mag is also high. Looking for 1350 area

 

[Guy714]

How old is your tank? Ammonia and nitrate should be 0 as far as I know for a cycled tank.

 

[thisguy1]

How old is your tank? Ammonia and nitrate should be 0 as far as I know for a cycled tank.

The tank is a year old. I have a lot more corals in the tank plis two fish and some snails and I feed once daily

 

[thisguy1]

Agreed tank needs to be dirtier. Mag is also high. Looking for 1350 area

Yea idk if I did the test correctly I’m using Red Sea test kit I’m gonna test again tomorrow

 

[thisguy1]

I'm curious on the flesh loss, is it receding or losing polyps?
Also, can you count how many mouths the hammer has?

Well I’ve watched it everyday for almost two weeks and it used to have more flesh around the skeleton. I think it has 2-3 mouths I’m not 100 percent positive and hasn’t lost any polyps that I’ve noticed

 

[thisguy1]

Im going to say lack of nutrients is not good.
They need Po4 and Nitrate

Yea I’ve been looking into buying some Po4 just doing more research. I do a weekly water change to replenish everything since a have a few corals in my tank plus I also dose phytoplankton and Redsea+ after every WC

 

[Goaway]

The tank is a year old. I have a lot more corals in the tank plis two fish and some snails and I feed once daily

Feed 3 times daily if you can. If not give a heavy morning feed and another when you can