For me hempy works out great. First I was abit afraid of heat and stagnating water but I havent had any problem.
I had the same problem as you do now. First I grew in soil and had to move the plants every watering and I realized I cant go on because they get too big and that I cant have plants standing and rinsing off due to smell.
Now I just elevate the ”pots” slightly and collect the run-off in a separate container. Sure in late flower I had to water them every other day but its litterally just mix nutrients, put it in the hempy and zip the trnt up again 30 min later collect the water.
Glad I did, super easy and grows like crazy compared to soil.