Have to report first design flaw. 27 Gallons might be to big. One coaster centered wasn't the ticket. Solution warned to one side and tilted plant into bulb.. ouch.... need two coasters or smaller tub. To rectify I just took the 250 lbs and slid it to the floor, bummer now my drain valve is worthless.. shop vac o
To the rescue and another roller and gonna test a smaller tote. One thing I've Learned is freshness of solution plays a bigger part with these ces nutes...