If you want super simple, “set and forget” hydro growing, nothing is easier, cheaper, simpler, or less trouble than hempy buckets.
Take any bucket, drill some holes in the sides a little ways above the bottom (for a 5 gallon bucket, it would be about 2" up), fill with perlite, and start a plant in it. When ever the leaves start to droop, add water/nutes until some runs out the holes, .
Of course, as with ALL hydro, and ALL soil grows, you still need to PH the nutes, and mix to the proper concentration.