I used it for growing - never for cloning or seed starting.
As a medium and in handy pre-made cubes. Great stuff for SOG work, in a flood and drain.
It should be flooded 5 times a day for by far the most nutrient lines out there.
1 at lights on and 1 right before lights out, and balance the other three evenly between them.
I positively killed grams per watt in a 2x2 flood and drain. It was filled with 35 4" cubes and each one produced an average of 32 grs per plant.
250w HID unit. It was a home made cage that held the table at waste high and the res was below it. Gravity drain with a mini pump in the res to fill the table. A 3.75 inch tube extended from the drain hole to allow for holding fill depth and the solution would drain back through the pump when it stopped running.
Used this as my "Dial in" tool for new strains before moving them into full production.... I don't do hydro any more.