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I personally would start with the directions on the bottle.
If I recall correctly, it is not advised as a single source nute, designed to be added to your bloom mix.
If thats right, what I would do, is follow those directions ( confirm it first ), thus add whatever your bloom nutes are, then the coolbloom, based on the measurements it gives you, then check the TDS via a PPM meter. If its coming in high ( personally at a similar stage I watered with 1300 PPM and noticed only 1 plant show the beginning of nute lockout, burnt leaf tips ), so lets say it comes in at 1500, and you want to play it safe, dilute down to the PPM target you have set for yourself.
Then PH it according to your substrate and target PH, then rock and roll.
I can take a look at your plant photos to maybe expand on this, but thats what I would generally do in your shoes. I also would not necessarily hit with a finishing agent right before cutting, while Im personally not a big believer in the value of flushing, I understand its common practice so would likely recommend it when using nute salts instead of organics.
Looking forward to other answers as well .
That is the ripening formula known as dry koolbloom. You are supposed to give one dose of that at .5 tsp per gallon on the last week of flower. The liquid koolbloom is a 0-10-10 liquid. The koolbloom you have stresses the plants so it's not intended for feeding through flower
On the label of the Dry version of this (same 2-45-28 NPK) it says only to use this in the last “1-2 weeks prior to flush”
This is how I have always used it and recommend against using any time before LATE flower. It is a ripening formula, so It’s like a final push to fatten/ripen flower.
My package says usage:
Mild rate - 1/4 teaspoon per gallon
Aggressive rate - 1/2 teaspoon per gallon.
I have only ever gone for the mild 1/4 tsp rate. Good luck!
the burnt tips suggest that there was a bit of an excess but overall they are looking good, just a tiny bit of a reduction and they are on the perfect point.
vagabond
