PAR requirements for different corals

LPS, SPS and all coral chat
Kaidoro
Posts: 9
Joined: Mon Dec 25, 2023 3:16 pm

PAR requirements for different corals

Post by Kaidoro »

I've been struggling to figure out the right PAR levels for my mixed reef. Some of my Zoas are doing great, but my Acros look kinda sad. What's the sweet spot for each type?
tideburn
Posts: 4
Joined: Fri Dec 16, 2022 11:32 pm

Re: PAR requirements for different corals

Post by tideburn »

PAR needs vary a lot. Softies like Zoas and Mushrooms can thrive at 50–100, LPS like Hammers and Torches need 100–200, and SPS like Acros demand 200–400. Make sure your light isn't too intense for the lower-demand ones.
Davyce
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Joined: Mon Apr 10, 2023 8:35 pm

Re: PAR requirements for different corals

Post by Davyce »

tideburn wrote: Thu May 15, 2025 11:43 pm PAR needs vary a lot. Softies like Zoas and Mushrooms can thrive at 50–100, LPS like Hammers and Torches need 100–200, and SPS like Acros demand 200–400. Make sure your light isn't too intense for the lower-demand ones.
Yep, and don't forget to acclimate new corals slowly. Jumping straight to high PAR can bleach 'em.
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skymist
Posts: 28
Joined: Thu Mar 28, 2024 10:46 am

Re: PAR requirements for different corals

Post by skymist »

I've got a Red Sea LED setup. My Acros are at 300 PAR, and they're coloring up nicely. But my Duncan's at 150, and it's happy too. It's all about placement.
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Scripta
Posts: 7
Joined: Thu Oct 10, 2024 1:27 am

Re: PAR requirements for different corals

Post by Scripta »

My tank's a mess right now. I've got a cheap light, and everything's kinda brown. Gonna upgrade soon, but I'm scared of frying my softies. Any budget-friendly options?
sunsetkid
Posts: 3
Joined: Sun Sep 15, 2024 8:45 pm

Re: PAR requirements for different corals

Post by sunsetkid »

I've been using a PAR meter to map my tank. It's wild how much the levels drop off near the bottom. My Zoas are on the sandbed at 80 PAR, and they're thriving.
tideburn
Posts: 4
Joined: Fri Dec 16, 2022 11:32 pm

Re: PAR requirements for different corals

Post by tideburn »

Scripta wrote: Fri May 16, 2025 3:47 am My tank's a mess right now. I've got a cheap light, and everything's kinda brown. Gonna upgrade soon, but I'm scared of frying my softies. Any budget-friendly options?
AI Prime HDs are solid for smaller tanks. You can dial in the intensity and spectrum, so you won't nuke your softies.
Kaidoro
Posts: 9
Joined: Mon Dec 25, 2023 3:16 pm

Re: PAR requirements for different corals

Post by Kaidoro »

Thanks for the tips, everyone. I'll try adjusting my light settings and see how it goes. Maybe move my Acros higher up.
Davyce
Posts: 3
Joined: Mon Apr 10, 2023 8:35 pm

Re: PAR requirements for different corals

Post by Davyce »

Good call. Just watch for any signs of stress. If your Acros start paling, cut the intensity a bit. Better to go slow than lose 'em.
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skymist
Posts: 28
Joined: Thu Mar 28, 2024 10:46 am

Re: PAR requirements for different corals

Post by skymist »

Also, keep an eye on your alk and calcium. High PAR corals like Acros suck up those elements fast. My tank's alk drops like a rock if I don't dose daily.
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