Na man I can afford it and shit I just would rather not if I can use something I already have... Bat guano is high in nitrogen right? Can I give it a small dose of guano tea for the nitro boost?
Bat Guano can be both, depending on the diet of the bays. Fruit eating bats generally shit higher amounts of P, while their insect eating cousins tend to crap higher amounts of N.
I'd say the Guano is still good. Make a "tea" and feed that if you're worried.
Is that yellowing confined to the lower leaves? If so, that is probably natural. They tend to shed them when they no longer need them.
You getting them up into the mid-section? (I have 2 now that have one bright yellow leaf each.)
Are you vegging? I'm gonna assume you are in flower, and about 2 or more weeks in. That being the case, it could very well be a Cal Mag deficiency. Give them a dose or 2 of Epsom Salts (1 Tbsp/Gal) and see what that does. They should green up in no time.
CalMag deficiency killed off most of my first 2 grows. It was doubly bad because it happened TWICE to me. Being the newbie I was, I hit the forums and was immediately beset by so many conflicting "diagnoses". CalMag was one of the prevalent recommendations, so the third go around, I used the CalMag and I haven't had that same prob since.
happy smokin.
