i'M USING FOX FARMS BIG BLOOM AND TIGER BLOOM AND I WILL ADD CHA CHING WEEK 5-7MAYBE 8 IF PLANTS ARE READY I STOP 1 WEEK BEFORE TO HELP FLUSH NUTES WHAT I MEAN IS I JUST USE WATER NPK ARE VERY IMPORTANT NUTES THAT THE PLANTS NEED THROUGH THERE LIFE VEG AND FLOWER!MY BIG BLOOM IS.01-.3-.7 AND MY TIGER BLOOM IS 2-8-4 JUST STICK WITH EVERY OTHER WATER AND U WILL BE FINE.GOOD LUCK HOPE THIS HELPED.