Hi Rusty. No it isn't MG:MC soil, its just MG potting soil. They are in 5USG buckets, and I water about 1/4USG (960mL) of water every 3 days, and by that time they seem to be drooping of thirst. Is this sufficient? My next grow will be 4 flowering plants in 3USG buckets. Any suggestion of a good watering schedule? Something like 600mL every 3 days?