How best to keep Alk stable with the Neptune DOS? Kalk???

56cbr600rr

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Just picked up a Neptune DOS, Whats the best "ingredient" to keep ALK stable?

I have been using Kalk in my ato mixed with the RO water ant its been working pretty darn good. I'd like to go back to the ATO just being RO water and I'd like to dose for alk separately with my Trident and DOS unit. So, my question is, should I mix kalk with fresh mixed saltwater, soda ash, Reef Fusion 2, or something else with the DOS unit.???

I honestly liked using the Kalk, ph was always pretty good with it too.

Thoughts?
 
We use our DOS with ESV 2-part solution. It does equal amounts of alk/calc additive.
 
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