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What causes coral polyp bailout?
Posted: Mon Sep 01, 2025 9:04 am
by 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?
Re: What causes coral polyp bailout?
Posted: Mon Sep 01, 2025 12:14 pm
by 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.
Re: What causes coral polyp bailout?
Posted: Mon Sep 01, 2025 2:17 pm
by jink
mine did that too. dunno why. params good, no pests. weird vibe.
Re: What causes coral polyp bailout?
Posted: Mon Sep 01, 2025 5:39 pm
by Flyer4
Bridger1 wrote: ↑Mon Sep 01, 2025 12:14 pm
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?
Re: What causes coral polyp bailout?
Posted: Mon Sep 01, 2025 7:56 pm
by punjar
Could be chemical warfare too. Some corals release toxins when stressed. Running carbon might help if that's the case.
Re: What causes coral polyp bailout?
Posted: Mon Sep 01, 2025 9:24 pm
by 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.
Re: What causes coral polyp bailout?
Posted: Tue Sep 02, 2025 12:49 am
by sunnybacon
my zoas did this once, turned out the magnesium was low. fixed it with a water change and they chilled out.
Re: What causes coral polyp bailout?
Posted: Tue Sep 02, 2025 5:07 am
by flamster
mole wrote: ↑Mon Sep 01, 2025 9:04 am
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.
Re: What causes coral polyp bailout?
Posted: Tue Sep 02, 2025 9:03 am
by 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.
Re: What causes coral polyp bailout?
Posted: Tue Sep 02, 2025 12:29 pm
by Bridger1
Flow changes can definitely mess with them. If it's just the Acropora, might be worth isolating it to see if others react.