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When you look at the ICP reports of TM and Nyos they look remarkably similar. Almost suspiciously so :)I’ve been using Tropic Marin Pro Reef in mine but recently ordered a bucket of Nyos Pure to try it out. It seems pretty interchangeable especially since I’m only doing daily 1% AWC.
Yeah, except every single time you do a water change with a lower all salt your tank slowly drops unless you’re compensating somewhere else . Come on you know that!If you run your alkalinity at 8dkh and use 7dkh salt….your alkalinity will go from 8dkh to 7.9dkh after a 10% water change.
You and your testing equipment can’t even detect that change
Yeah, except every single time you do a water change with a lower all salt your tank slowly drops unless you’re compensating somewhere else . Come on you know that!

I was out of the hobby for 8 years and used ESV in the past. I’m now using it again now and love it. Why? Because it mixes clean and fast. And there’s no chance of stratification (not sure if that’s a real thing). I know it wasn’t one of the 2 choices, but wanted to share my positive experience. I’ve also had great success with Fritz RPM and Reef Crystals. Why’d I switch? Who knows? It’s a hobby :)I've been using ESV salt, mostly, over the past 20+ years. It comes in 4 parts: Dissolve NaCl first, then MgSO4, then Solution A (Alk and negative elements), then Solution B (Ca and positive elements). It mixes clean and quick, and I'm more confident about getting well-distributed trace elements.
I used to buy it by the pallet or pick it up from ESV in Long Island (when I lived in N.J.). Now, I wait for it to go on sale from BRS when the price is reasonable.