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hey all just a quick question about the dreaded lucas formula =) just wondering do i use a half strength mix in soil or the full 8/16 ratio?

is there any good slow release ferts on the market that eliminate having to feed through water soloution?

hey guys can someone tell me for mature plants 1 month + do i feed every time i water as i am afraid i am going to over do it i am using the lucas formula if not how often? plants are white widow approx 1 metre high