mix 3 part gh nurts to chart,
got ppm too 980
is this right ?
trying to get to 1400 ppm
I have read never mix stronger then chart ?
should i just add more too bring ppm up
I would half to go overboard on chart mix

Does the # of plants in a box matter ?

more plants would mean more nurt. usage , right ?

Correct but in the right portions is what you are looking for. If you are going to go off the chart that's fine but keep everything in order. They have a calculator on their website where you can get the exact formula and vary each part and know what the out come will be with just a click or too.

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Peace
Zandor

If you go cheap you grow cheap. - Me