Never had trumpets before. But these don't look "plump" like pics I've seen. They are more rigid. What can I do for them? I feed my tank every 4 days with the simp off.
Are your parameters acceptable? They are a lower light needy coral. Low/med flow. Yours seem to have retracted, which means they are not happy with their environment. Check/test water, flow, light.
I'd move them back down to lower light. Might be able to entice them out with some powdered food like roids or gonipower. They look pretty much toasted though.
Are they close enough for anything to be stinging them? They look really unhappy.
Like said above I'd put them lower in the tank. Maybe even under an overhang? I keep the ones I have in a good amount of shade, they weren't happy on the sand bed while still under full light. Now they're fat and happy.....
When mine start to recede, I do a 25% wc and in a day or two they are full again. But depending on how large your system is, that may be a large order.
Also, I have never target feed and mine grow like weeds. Yours may not like what you are feeding them and this is their way of telling you to stop it.
I had this happen to one of my trumpets. Don't know why it tanked, as all my other LPS where growing like weeds. In about a week all of the tissue was gone and I thought it was dead. Left the skeleton in the back corner of my tank, and 3 months later I noticed it had live flesh on it. Fast forward 3 months later and now it is twice the size of the original colony.
After I got mine, they took a while to liven up. Found that they like the light, but don't like much flow at all. We try to feed ours whenever we feed the rest, sometimes they take one, sometimes they don't. They've eaten mysis shrimp, blood worms, black worms, and maybe some coral frenzy pellets.
I would def check the flow, bc mine were really ticked about having a tad too much, and as soon as I moved them down a couple inches and next to a rock that blocked the flow, they've started splitting off. Happy go lucky.
I have mine high light about 1/2 way up, low flow. Took a while after 1st adding them to the tank to get adjusted & moved them a couple times. They're pretty hardy and will come back from bleaching/tissue loss, just have to find a spot they like. I've found that constantly moving them stresses them too, tho. Let it ride for a week or so unless they start looking worse.
I just put a mix of Reef Frenzy/Marine Snow in the tank 1 or 2 times a week. I don't target feed any of my coral. The candy canes have tripled in size in 6 months. Took them a couple months to get going tho. I try to feed the mix after main lights are out & blue led's on, when all the feeding tentacles are out
You can cheat by adding the juice from frozen foods like Mysid shrimp into the water about 20 min before you feed. The strong flavor of mysid will normally elicit a feeding response and should make all the feeding tentacles come out. This allows the time for the coral to convert from light capturing mode to feeding mode before all the food is gone from the water. This works for most hard to get eating corals to feed.
Or you can also take a turkey baster and blow around in the substrate at your rockwork line where it touches the sand. You can feed your corals and help remove detritus from your system. They love that stuff. I do this a few times a week as detritus is eaten by most corals and is nutrition packed.
We used to keep and feed Dendrophilia and Carnation corals alive years ago by stirring the substrate daily.