personally i would never use ferts when flowerin, i dont even use ferts in the veging stage. I just watter and let the women do there thing . if i was u i would watter twice a week and use no ferts.

Ive never used fets so i cant say there bad but my plants do spectacular with out em, plus i watter about 4-5 times per week.

the problem with using ferts in the flowering stage is the final product, i would rather be smoking buds with no chemicals in them