Frogspawn coral dying

[Razonix]

It used to be way bigger, now it's getting smaller. Any thoughts?

[Marino88]

They require moderate flow and bright light conditions, that's what I've found.

[Razonix]

haven't changed the setup in over a year, it's been in the same spot. I've got very bright LEDs and 2 MP10s. Tank's a 40 breeder

[rileyon]

I'm not seeing the white skeleton in the photo, just seems like the polyps aren't fully extended. This coral typically doesn't require target feeding, but it might be worth a shot to see if it perks up.

If it's not extending fully, you may want to take a closer look at your parameters - temperature, salinity, flow, light, and placement. Could something be bothering it? I don't usually hear about pests or parasites with this coral, but it's possible.

[finnix25]

Looks like the flow isn't too much - the extended tentacles seem to be able to stretch where they want, but it's hard to say for sure from a pic. If your lights haven't changed, it's highly unlikely that's the issue.

I'd take a closer look at your temp, pH, salinity, and alk levels. Specifically, I'd check for any swings in parameters or extremes. Temp and pH are often overlooked in this hobby, but they can have significant effects if they start to get out of control. High alk levels can also do significant damage to LPS corals. If you do have a pH issue, I wouldn't immediately start buffering - instead, try to figure out what might be causing it. Low alk, low magnesium, high CO2, or an imbalance in your carbonate/bicarbonate ratio could all be contributing factors. In a 40 breeder tank, water parameters can swing quickly, especially since your actual water volume is likely only around 20 gallons.

[Razonix]

Thanks for the advice, I've got a 20g sump in the setup too. Going to double-check all parameters.

My pH is stable between 8 and 8.3. Temperature is at 77-78. Alk is at 7.6 and Cal is 420.

[sweetie_22]

In my experience, low magnesium levels can also cause Euphyllia to get a bit testy, so it's worth verifying that as well.

[Razonix]

Magnesium is 1160.

[Razonix]

Got the magnesium supplement going to bring that up

[lumenox]

Yeah, I'm with you, 1350-1400 is a good range for me too, just remember to get there slowly, don't wanna shock the system.