Bro's i need some help!!!!!

OK SO HERES THE SITUATION.. I HAVE FOX FARM'S BIG BLOOM, TIGER BLOOM, GROW BIG, OPEN SESAME, CHA CHING AND BEASTIE BLOOMZ. WHAT I NEED TO KNOW IS HOW TO USE THEM WITH HUMBOLDT COUNTY'S OWN GRAVITY FLOWER HARDNER AND PURPLE MAXX.


DONT WANT MY BABYS TO BURN!

THANX

I use gravity at half the recommended strength and follow with a watering of just plain water. Never used purple maxx but the directions are pretty clear about cutting back nutrients and amounts on the bottle.