Yer overdoing the Bushmaster. Should be applied ONCE, wait to see if vertical growth ceases- you should know in 3-5 days. If it doesn't, hit em ONE more time, and put it away- yer done till next run. PGR's aren't something that you use over and over.

Skip the spray-n-grow for a week or two, then start using it once a week tops. If you're not sucking macros out of the res, you don't need the micros.