Nov 11, 2017 · There is no optimal alk level for all reefs and all aquarists. There are valid reasons to maintian any alk from 7 to 11 dKH, IMO. Higher alk (say, 9-11 dKH) promotes faster coral growth, …

Mar 22, 2022 · I am having issues with STN. As you’ll see below the likely culprit is disastrously low alk and probably very large alk swings. Suffice it to say my sps reef had until this point been doing …

Jul 29, 2025 · When alk demand is very low, the slow dissolution of calcium carbonate in the low pH regions down in sand and in rock pores can boost alk slowly and steadily.

Jun 13, 2024 · So now my question is how do I raise alk without raising calcium , everywhere I look says to raise both alk and calcium together ( 2 part ) but my calcium is already on the high side and I just …

Mar 7, 2025 · What’s up guys I’ve been running my tank for about 4 months now and I recently started dosing the recommended ml per 26g recipe provided of all for reef. Everything is doing fine but I got …

Apr 25, 2019 · I have been testing my alk twice a day, once just before the lights come on and once right after the lights go out and it seems that alk consumption is higher when the lights are on and lower …

Jul 31, 2021 · My Reef system has been very stable with a PH ~8.2-8.4, and Alk generally 8.0-9.0 for a very long time. ~175g system with three (3) tanks on a shared sump. Live rock is mostly the good …

Jul 1, 2024 · The alk drop of 4 dKH overnight is either test error, or precipitation of calcium carbonate, such as hardening of sand, deposits on heaters and pump impellers, etc. This is my generic …

Nov 16, 2019 · Curious to what everyone’s alk levels have been most successful for health/ color of your mixed tank setup ? I’ve had problems with 0 nitrates and phosphates on one of my tanks this past …

Apr 13, 2020 · Is there an alk additive that is best used in conjunction with kalk, if I decide to go that route? Tangent to this, I also occasionally use calcium carbonate as a flocculant after blowing off reef …