Maybe someone will correct me but I was under the impression that any less than 24 hours is a waste of time with AFs.

And you should check with someone about that 22 hour day they have where you live.
18/4=22
jakester Reviewed by jakester on . changing light times on af's af's growing under cfl's 18/4 that have about 3 weeks left thinking of moving to flower room with 600 hps under 12/12 for the last few weeks. would this add some weight or add some problems ? Rating: 5