big bloom is just bat g and worm castings like i keep sayin bat g is the shit hehehe,you can get jamacian bat for flower for 7-8 dollars fox farms chart uses grow big week 3-4 of flr so get some jam bat g and add every other water.big bloom is the only concentrate that is used all the way through the grow.the to most important are the big bloom and tiger bloom.Tiger bloom is used all the way through flr those 2 are the most used by fox farms.the grow big,open sesame,beastie bloomz and cha ching are used in very small amounts.