Auto water hempy buckets

I've done about 7 grows including a couple successful grows using 3 gal perlite-only hempy buckets with gh maxibloom nutes.

The last grow was affected by sporadic watering, i was away a bit and i think the roots dried a bit.

Anyways, my plan this time is to put the buckets into a bin filled with 5 gallons or so of nutes and hook up a submersible pump to run for 30 minutes daily flowing fresh nutrients into the buckets.
(*the buckets would be raised above the water level and would drain back into the bin).

Any problems with this plan?

Thanks in advance, - DHD