How long is preflower

So I’m using flora trio and it says to use 1.5ml/L then it says flower 2.5ml/L so my question is when does preflower finish and what week should I start using 2.5ml/L?

ab2t2000 said:

So I’m using flora trio and it says to use 1.5ml/L then it says flower 2.5ml/L so my question is when does preflower finish and what week should I start using 2.5ml/L?

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That’s kind of a vague statement, I would guess the first three weeks? That’s generally what I would consider preflower, will vary by cultivar.

You should start them on a higher level of Bloom a week before flipping to flower to 'prime the pump' so to say. I also add a half dose of Big Bud powder then as well then the other half at the flip. They feed heaviest during the stretch so need lots of everything including more light, CO2 if you got it and higher temps up to 90F if adding CO2.

Once stretch is over then I switch back to the regular grow regime but feed Lucas Formula style to lower N levels a bit.