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mother earth coco coir 70% perlite 30%

need help please 650 ppm ph 6.0

this is awesome and you are awesome

thanks for your reply.I haven’t seen any marijuana plants before, and I thought black leaves are bad. I bought 5 runtz auto flower seeds for fun. And I want to smoke my own weed.ppm 750, ph 6.1. Recently I see a few spider mites only a few and the leaves edge are turning black. So I come and ask...

i mean why leaves are turning black？

Can anyone tell me what is wrong with my runtz auto？2nd week flowering。thanks

I follow the GH company ratio. It is listing on their feed chart.BTW, what I said is N/P/K ppm ratio, not the 501/216/054, N/p2O5/k2O ratio on the product label

W What is terminator?sir. I don’t see it from gh product list.

I use GH tri, flo+(which i treat as B52), cal mag. You can use liquid kool B during flowering (treat as BIG bud from Advanced nutrients company). Calculate the total N/P/K ppm ratio from every product together when you add liquid Kool B. Feed upon your total N ppm. Good luck

Problem solved?

Water once a week and your grow medium is coco coir. Is it because you let your coco dry out?

You can use whatever you want when you balance the N ppm : P ppm : K ppm ratio and whole solution ppm from any nutrients of any company. Whenever you want to change something, please calculate the total N ppm from each nutrient first. Everyone from this web has their own faith, people just...