Self watering bases. They water them selfs. Takes some of my human error out of it. So far Im loving them. And the plants are too. I been giving them a 2 day dry out period not sure if its needed. And they didnt seem to happy the last time I did it. Think Im going to just do one day see what its like then do fill when empty see what thats like and I need more air flow down low with the pots wet like all the time mold and mildew are coming in play. Got some stuff coming for that and will get out another fan. Lots to learn with new grow styles but same old pot and soil can get boring I had to add some verity to the mix. And wanted to see if I could get bigger plants using theses bases. Might try a one gal and a three gal next round same strain same soil just different pot size and see what the difference might be.Your assumption is correct! With proper watering, naturally.