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Setup: Soil+vermiculite (5:2) Temperature in box i...
Akvinskystarted grow question 5 years ago
Setup:
Soil+vermiculite (5:2)
Temperature in box is about 84F. Near the led 60w is about 90F
Ph in - 4.5-5.0. Out - 6.0-6.5
(because of vermiculite?).
Ppm in - 140 (only water last few days) . Out - 1500
On vegetative stage there was no problems with the same ph and ppm plevel.
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RealMedicineanswered grow question 5 years ago
4.5 is to low and if it comes out at 6.5 there is a ph problem for sure. PH in the soil is way to high. Flush with a good amount of 6.0 ph water. When the soil drys out water with a ppm of 800. Try and keep water at 6.0, that's the magic number.
Akvinskyanswered grow question 5 years ago
chasv77, 3.5-4.0 inches to the top from led. Distance became much less. I mean it's seems like vermiculite up ph level (from 4.5 to ±6.5)
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Akvinskyanswered grow question 5 years ago
RealMedicine, when I gave her 6.0-6.5 ph (in) on veg stage leaves changed the same(week 2). Out was about 7.5 ph
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chasv77answered grow question 5 years ago
IMO your temps may be too hot for one. For only a 60w light, that may indicate you are not ventilating enough.
Are your plants too close to that light as well? Was it the same distance from canopy during veg? I know growing in a box can have lots of vertical challenges.
If your internal -> external ventilation is maxed out, you could use c02 (DIY setup) to help those plants more.
I have no experience in using ppm as a health indicator of soil . I would suspect that the Vermiculite has no bearing on that. As it just inorganic material used for absorption and aeration.
I assume at 5:2 mix, your soil should drain well, so over watering is not an issue(?), unless I am missing something. FYI, Perlite is a little better additive for areation, but doesn't hold nutes and water as well.
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