Why is my Goniopora not opening?

[honeycomb]

My Goniopora hasn't opened in three days. Water params are good, 0 ammonia, 0 nitrite, 5 nitrate, 8.2 pH, 1.025 salinity. Tank is a 40-gallon mixed reef with two Clownfish and a Cleaner Shrimp. Lighting is AI Prime 16HD at 60% intensity. No recent changes except a 10% water change four days ago. Any ideas?

[FableKing]

Gonioporas are finicky with flow. What's your current setup? They prefer low to moderate, indirect flow. Also, check for pests like flatworms or nudibranchs. I've seen them close up due to irritation from hitchhikers.

[kaleon8]

Gonioporas are finicky with flow. What's your current setup? They prefer low to moderate, indirect flow. Also, check for pests like flatworms or nudibranchs. I've seen them close up due to irritation from hitchhikers.

Spot on. I'd add that they're heavy feeders too. Try spot-feeding phytoplankton or reef roids. Mine perks up after a good meal.

[Riverix]

Could be a light shock thing. You said you're running AI Prime at 60%. Maybe dial it back to 50% for a week? Gonis can be drama queens with sudden changes.

[finhaven]

How's your alkalinity? Gonis are sensitive to swings. If it's stable, try moving it to a shadier spot. Sometimes they just need a break from the spotlight.

[honeycomb]

Thanks for the tips, everyone. Flow is two MP10s at 30%, so I'll tweak that. Alkalinity is steady at 8.5 dKH. Gonna try spot-feeding tonight and report back.

[fizzics]

Yo, check your magnesium too. Low mag makes mine sulk. Also, any chance your Cleaner Shrimp is messing with it? Those little dudes can be pests sometimes.

[flambo]

Mine did the same thing last month. Turned out it was just pissed off from the water change. Took a week to bounce back. Patience is key.

[anglerx]

Never kept Goniopora, but my Zoas close up if the temp swings. You running a heater controller? Just a thought.