if your growing decent sized plants i think it would be more usefull then on small sea of green or less than 10 plant operation. i would use bthe snow storm all the way flower through like a purple max. the gravity is best used for 2-3 aplications during week 5 on a 8 week flower plant or basily start with 4 weeks to finish during peak nutes and flower bulking but before flush which is 2-3 weeks for me. in dirt its great in hydro with the right timeing it works but could be more costly. go easy using it too its strain sensitive use it with water no nutes and i think it help b4 flush because it will make them eat all avalable nutes in the soil then move to flushing with water and some carb and your stuff will be tasy and not harsh. one pic is over gravity burn the other is frosty white Rhino from using snow storm