Re: Tom's gh booster question
Greg said he used something I suggested some time ago, I know generally what is in it, but not precisely.
I know he adds less K2SO4, more MgSO4.
Beyond that, you need to ask him.
I am more concerned with having enough of Mg, Ca, which is estimated generally, so a precise ppm is not required for GH anyway unless you want to answer one of two questions:
What s the bare minumum, or what is the maximum, but the range produced as measured via GH kit should be pretty good.
So if you add 1-2 degrees more GH once a week after the water change, via this, you will never have an issues with Ca/Mg.
If you believe you do, you need to look elsewhere.
I've had all sort of tap over the years, I've never found this general and quite simple method to ever fail.
Now you might have something other than Ca/Mg issues causing your problems, but not Ca/Mg.
Mg issues have popped up but they are very easy to rule out, so we added more of that and less K+ since we get plenty from KNO3.
Tap's GH is never all Mg and no Ca, so the Ca issues are very rare.
So if you want the analysis, gotta bug Greg.