What causes coral polyp bailout?

[mole]

I've noticed my Acropora bailing out lately, and I'm not sure why. Parameters seem stable, 78F, 1.025 salinity, 8 dKH. Anyone else dealt with this?

[Bridger1]

Polyp bailout can happen if there's a sudden shift in lighting or flow. Did you change anything recently? Also, check for pests like nudis.

[jink]

mine did that too. dunno why. params good, no pests. weird vibe.

[Flyer4]

Polyp bailout can happen if there's a sudden shift in lighting or flow. Did you change anything recently? Also, check for pests like nudis.

I agree, lighting changes are a big one. What's your PAR level, mole?

[punjar]

Could be chemical warfare too. Some corals release toxins when stressed. Running carbon might help if that's the case.

[KookyBuck]

Or maybe your alk is swinging more than you think. Test it at the same time every day for a week. Those kits can be sketchy.

[sunnybacon]

my zoas did this once, turned out the magnesium was low. fixed it with a water change and they chilled out.

[flamster]

I've noticed my Acropora bailing out lately, and I'm not sure why. Parameters seem stable, 78F, 1.025 salinity, 8 dKH. Anyone else dealt with this?

How old's your tank? New setups can have hidden instability even if params look good.

[mole]

Thanks for the tips, everyone. Tank's been up for a year, but I did tweak the flow last week. Gonna check PAR and run some extra tests.

[Bridger1]

Flow changes can definitely mess with them. If it's just the Acropora, might be worth isolating it to see if others react.