I agree with the others, just dose the big three. Potassium can be dosed for SPS, I myself was dosing it since the beginning. With the SPS issues I am having, Potassium has been removed from the equation and I haven't seen any drawbacks from not dosing anymore.
I myself am relying on bigger water changes with a good salt. Actually since doing this, I am not dosing anything anymore. It has been a couple months now and the water changes (with Reefers Best Salt) is keeping everything I test for at perfect levels. So maybe just concentrate on water changes but keep testing... And keep the dosing to when necessary.
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Setup: 180G DT, 105G Refuge (approx. 300lbs LR, 150lbs Aragonite)
Hardware: Super Reef Octopus SSS-3000, Tunze ATO, Mag 18 return, 2x MP40W, 2X Koralia 4's Wavemaker
Lighting: 5ft Hamilton Belize Sun (2x250W MH, 2X80W T5HO)
Type of Aquarium: mixed reef (SPS & LPS) with fish
Dosing: Mg, Ca, Alk
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