Rocky, I use
SubCulture M, been using it for years.
I have added Great White to the mix.
I dust the roots and the transplant pot with both prior to transplant.
The second way I use it. I don't use it through the drip system daily, but before the rez change, when rez is down to two to three gallons I add both and then do a mini flush. This works out to every 7 to 9 days. If I don't have enough solution in the rez I will hand water it in.
This is day 18 of 12/12, 3 days after adding SCM and GW at there recommended rates. Same Smart Pot, 1 gallon in Canna coco.
2/15 day 14
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1/19 day 18
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The way I look at it is, the better the root system the better the grow.