How to prevent coral stress

LPS, SPS and all coral chat
daxlio
Posts: 4
Joined: Thu Oct 10, 2024 2:42 pm

How to prevent coral stress

Post by daxlio »

My corals aren't looking too happy lately. Water params are good, 0 ammonia, 0 nitrite, nitrate around 5 ppm. I've got a 75 gallon tank with a Radion XR15, running at 60% intensity for 8 hours. Any tips to chill them out?
Bijack
Posts: 12
Joined: Thu Oct 10, 2024 3:45 pm

Re: How to prevent coral stress

Post by Bijack »

I've had similar issues before. How often are you doing water changes? Sometimes they just need a fresh batch of saltwater to perk up. Also, what's your alk sitting at?
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OceanBreeze
Posts: 1
Joined: Thu Oct 10, 2024 1:21 am

Re: How to prevent coral stress

Post by OceanBreeze »

Yo, daxlio, I feel you. My Zoas were acting sketchy last month. Turned out my magnesium was way low. You might wanna check that, bro. Also, how's your flow? Too much can mess with them.
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penguin
Posts: 4
Joined: Fri Jun 28, 2024 2:48 pm

Re: How to prevent coral stress

Post by penguin »

My tank's been stable since I switched to weekly 10% water changes. I use Red Sea Coral Pro salt and keep my alk around 8.5 dKH. Maybe try adjusting your lighting schedule too?
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jazmint
Posts: 4
Joined: Thu Oct 10, 2024 3:16 am

Re: How to prevent coral stress

Post by jazmint »

OceanBreeze wrote: Thu Aug 14, 2025 9:02 pm Yo, daxlio, I feel you. My Zoas were acting sketchy last month. Turned out my magnesium was way low. You might wanna check that, bro. Also, how's your flow? Too much can mess with them.
Magnesium is key, but don't forget about calcium. I keep mine at 420 ppm and my corals love it. What's your calcium level, daxlio?
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Lynx
Posts: 8
Joined: Thu Oct 10, 2024 4:42 am

Re: How to prevent coral stress

Post by Lynx »

I'd double-check your temperature stability. Even small swings can stress them out. I use a titanium heater with a controller to keep it at 78°F. Also, how old are your bulbs?
goldrush
Posts: 6
Joined: Thu Oct 10, 2024 10:23 pm

Re: How to prevent coral stress

Post by goldrush »

Dude, my Acros were bleaching until I dialed back the light. Maybe cut it to 50% and see if they bounce back. Also, what's your phosphate level? High phosphates can mess with them too.
Swiftsea
Posts: 19
Joined: Thu Oct 10, 2024 6:16 pm

Re: How to prevent coral stress

Post by Swiftsea »

I've found that feeding them a bit more often helps. I use Reef Roids twice a week and my corals are thriving. What's your feeding routine like?
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lebleb
Posts: 2
Joined: Thu Oct 10, 2024 1:17 am

Re: How to prevent coral stress

Post by lebleb »

goldrush wrote: Fri Aug 15, 2025 1:46 am Dude, my Acros were bleaching until I dialed back the light. Maybe cut it to 50% and see if they bounce back. Also, what's your phosphate level? High phosphates can mess with them too.
Light intensity is huge. I run my Radion at 50% max and my corals are happy. Also, keep an eye on your nitrates. Too low can be just as bad as too high.
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tiderunner
Posts: 34
Joined: Fri May 06, 2022 5:37 am

Re: How to prevent coral stress

Post by tiderunner »

Sometimes it's just a weird vibe in the tank. I'd try a small water change and see if that helps. Also, how's your skimmer working? A dirty skimmer can throw things off.
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