Whats wrong with my frogspawn?

[PghReef]

Had this guy since April, parameters have always been good. I think it was in an area of too much flow so I moved it around and did a couple seachem dips over the past month. Hasn't really recovered the way I liked so I moved it to a low flow low light qt tank and did a long dip in the seachem before moving. The 2 hammers in my display tank look great, and the other frogs in the qt, they're new, are doing ok as well. Not sure what else to do but wait.
Original photo after purchase

Photo today

Other new frogs in qt

 

[PghReef]

 

[TheShrimpNibbler]

Is it smaller now? I would stop dipping so much, since they can be stressful. Just leave it alone and try to let it recover in conditions that are like those of the other frogspawn.

 

[PghReef]

It is much smaller. I noticed some tissue recession from underneath the head where it meets the skeleton. No tissue loss from the head itself and no bugs falling off after a dip. Just gonna leave it be.
Should I feed it or would feeding cause stress due to excess energy used to digest?

 

[Hermie]

Low Nitrates/phosphates in your system IMO. I see no algae on your rocks or creatures that would eat any that would be produced. Corals are like plants but they don't have roots. They must absorb nutrients from the "water column" so if your water is "relatively sterile" they cannot "Eat" or feed themselves and they will die.

 

[PghReef]

Low Nitrates/phosphates in your system IMO. I see no algae on your rocks or creatures that would eat any that would be produced. Corals are like plants but they don't have roots. They must absorb nutrients from the "water column" so if your water is "relatively sterile" they cannot "Eat" or feed themselves and they will die.

That's a newly set up qt. The display tank has plenty of algae and Ijust bolstered my cuc actually. The nitrates and phosphates do test 0 but I believe it's because the algae eats them up. The other corals including 2 hammer and a huge elegance are doing extremely well.

 

[TheShrimpNibbler]

If you have a refugium with a lot of macros, that could be using up a lot of nutrients. You may want to prune the algae if that’s the case.

 

[Hermie]

That's a newly set up qt. The display tank has plenty of algae and Ijust bolstered my cuc actually. The nitrates and phosphates do test 0 but I believe it's because the algae eats them up. The other corals including 2 hammer and a huge elegance are doing extremely well.

You have relatively large coral biomass in a newly setup tank, the fact that your tests show 0 even back up my hypothesis. You can ignore it if you want... Do you have photos of the "older" corals and their growth over time in that setup? If you don't see growth, then they are either in stasis or slowing loosing growth, and that would back up my hypothesis further.

 

[PghReef]

You have relatively large coral biomass in a newly setup tank, the fact that your tests show 0 even back up my hypothesis. You can ignore it if you want... Do you have photos of the "older" corals and their growth over time in that setup? If you don't see growth, then they are either in stasis or slowing loosing growth, and that would back up my hypothesis further.

The pictures are of the sick coral moved into the recently set up qt tank with new corals just purchased. The DT it has been in where it wasnt looking well has been set up for 9 months with alot of algae growth. I did go through an ulns phase when the tank was fallow and my sps paled out, I increased feeding and they colored up again. The encrusting mint is have expanded a lot, the birdnest and stylos have grown and been fragged, the mushrooms multiplied, and hammers splitting heads. The frog is the only one to go downhill. My galaxea also hasn't looked great but has had lot of algae growth on it.

I do plan on feeding more though, I have been hesitant to feed the corals in fear of fueling algae growth.