cheers buddy thanks for your input il be needing it to preferably feed them longer than that any idea where I can find a recipe for a mix that will feed them throughout the whole grow or close enough?
Not sure that exists, TBH. There are gardening composts you can buy that claim to have 4 months' worth of fertiliser. Not sure that works for cannabis however. The nearest I can think of to a full lifecycle substrate would be an organic no-till bed. Stick several plants in that rather than individual pots. Not something I have experience of though, and may still need supplementing with various organic feeds...