I use Filthy Rich, by Dr. Q. (Star Nurseries)

I'd start 'em at half dose, and watch their reaction. Like I said, I give 'em half dose, twice a week. Less of a shock versus a full dose, once per week. Some folks fert full-dose, once a week and get good results. Boils down to fine-tuning the schedules and quantities, either way. :thumbsup: