Alk values
 

I am using reefers best salt and have just been doing water changes to keep values up. I do 5 gallons on Tuesday and 10 on Friday. So far so good

I know that alk in RB is 7 which is what they recommend on zeo systems. I use prodibio. My tank is 35g +/- sps loaded. I know as tank grows that it will consume more cal alk. But wonder if alk should be a little higher

Params before w/c
Ca-400
Kh-6
Mg-1040

I have always experienced problems bellow 6.5dKH (STN) and above 8.0dKH (tip burn) in our SPS dominated system.

Lately my aim is right between the two. :)

Yes I've been consistent at 7. No stn or rtn.

Ill check a hour after w/c and see where I'm at.