No certain amount of runoff is required.

Just make sure its runoff coming from the interior of the plant soil, and not seepage from the edges of the pot.

As for the SuperThrive, I still fed them that every single water.

You cant really over do it on superthrive, and man this shit does work.

I do a couple of drops per pint. Even though it says one drop per gallon. I have now come to just pour actually several drops into a water bottle and water them.

They seem to love it.