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My cinnamon palys are closed up and look waxy/shiny, everything else looks fine, no changes in chemistry.

So what are your parameters?

Tell us more about your system, its size, its lighting, its flow. Or do you have a tank journal we can look at?

Mixed reef no SPS, 90 gal display, 140 gal sump, rubbermaid brute cryptic, approx. 500lbs live rock, 20 gal fuge with cheato, DIY 72 3 watt LED, reeflo dart return, 2 wp25, apex controller, DIY sulpher denitrator, GFO& carbon reactors, RE alpha cone 200 skimmer.
ca 450
alk 8.3dkh
mag 1440
no3 0.2
po4 .03
ph 8.3
sg 1.026
temp. 78
I had moved a small Kenya tree @ 3 inches from it a few days ago and moved it away yesterday, no changes lately, everything else looks fine.

its quite common for them to do this , could have been stung,rubbed against or disturbed etc.

in short time they will be normal:)

OK thanks for the reply, I've had them for a few years now and this is the first time, maybe the kenya tree stung them, I'm trying to give it away but no luck, maybe I should try selling it.

grandis palythoa can be hard to give away for sure but some varients are very nice:)

i have the true cinnamon El Grandis paly and i wouldnt sell a polyp to my grandmother as her last dying wish(harsh i know) lol

im sure will come around soon, if they stay closed for more than a few days then there is an issue, either water quality( not seeing it though) or possibly some other issue(fish,pests etc.)

if theres no other coral issues then i say you are fine:)

OH NO I'm keeping my palys, trying to give away the kenya tree.

just had the same thing happen to mine, thought they were a goner didn't open for a few weeks , so i took them out and put them in my large frag tank , and wow there open everyday and are huge, don't know what was wrong with them cause my param are in check, something was off, can you put them in another tank to see what happens
mine too are the true cinnamon El Grandis

not sure if they are El Grandis but they are the size of a loonie when open.