Get high phospherus bat guano I think it’s like 10-32- an something, amend it/kinda work it into the top few inches of soil make sure u don’t put any near ur base stock of the plant, it will do wonders for u I wouldn’t bother with the meal like buddy said if it’s high in nitrogen, unless u wanna add an 1/8-1/10 dose of it in wit ur guano dude, if it’s high in nitrogen ur plants won’t yellow out good at the end an shit, I donno . The way I grow , my plants yellow out big time near the end but that’s what I want. Also , I’m using advanced nutes micro grow bloom wit voodoo juice n big bud this run but I got almost 15 yrs in growing. I highly reccomend the high phospherus version of bat-guano though if u amend 3/4 of the desired serving in ur soil the 2nd week of bloom it should work the same as any “big bud” supplement , If ur water is PHed n ur using a good medium