Feb 3, 2026 · Cycling reduces alk as ammonia is converted into nitrate, and bare calcium carbonate surfaces can be sites for more precipitation until things like bacteria, phosphate, organics, and …

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 …

Dec 23, 2019 · The Mag kit also corroborates the low Alk (in regards to RC specifically) so that in my mind would rule out a test kit issue. I haven't noticed anything forming in my buckets and I typically …

Jan 11, 2020 · Production of nitrate depletes alk a bit, and organisms using it adds it back. A soft coral tank can use 2 dKH per day from coralline algae, calcium carbonate spicules in soft corals, snails, …

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 …

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.

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 …

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 …

Jun 26, 2024 · Curious to see what people run their ALK at. I typically run it at 10 dKH and had a lot of success with that. However, i met an OG this weekend who runs it at 7.5 and had an awesome …

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 …