alkalinity for SPS dominance

LPS, SPS and all coral chat
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furrow
Posts: 3
Joined: Tue May 02, 2023 6:37 am

Re: alkalinity for SPS dominance

Post by furrow »

lighton7 wrote: Thu May 08, 2025 5:47 am Consistency beats chasing numbers. I keep alk at 8.8, cal 440, mag 1350. Dosing pumps on timers to avoid swings. SPS hate surprises more than imperfect params.
This. I crashed a tank once by overcorrecting alk. Slow adjustments, like 0.5 dKH per day max.
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dutzu
Posts: 5
Joined: Thu Oct 10, 2024 1:09 am

Re: alkalinity for SPS dominance

Post by dutzu »

My SPS do better at lower alk, weirdly. Run mine at 7.8, but I've got softies mixed in. Maybe it's the competition?
landfall
Posts: 2
Joined: Thu Oct 10, 2024 3:40 pm

Re: alkalinity for SPS dominance

Post by landfall »

dutzu wrote: Thu May 08, 2025 8:54 am My SPS do better at lower alk, weirdly. Run mine at 7.8, but I've got softies mixed in. Maybe it's the competition?
Could be allelopathy—softies release chemicals that bug SPS. Try carbon or extra skimming if you're mixed. Pure SPS tanks often run hotter alk.
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