1st time grower

[ppm Charlie]

Not sure what to do here, cause light is only running at 25% power. Can turn up with twist of knob or lower n make closer to plants. But the sun burn is evident. Is there a "sweet spot" im missing u think?

Turn your light up to 50% to 75% and lower it down to about 16-18-inches from your crop. Use the dimmer control to adjust light intensity up-or-down from there. Dimming and moving the light up-and-down accomplish the same general purpose. They adjust light intensity (higher or lower) and also adjust the size or field of light coverage.

If you use the dimmer control and up-down light movement you will always have good intensity of light, no matter how tall your crop gets, and your 420 gals will smile with happiness and show you "love".

 

[Roy Growin]

Hello - if your pH meter is correct, your pH is too high
Top it, train it and turn your light up to at least 50%
Good luck

 

[ppm Charlie]

Hello - if your pH meter is correct, your pH is too high
Top it, train it and turn your light up to at least 50%
Good luck

@Growings knows...

 

[ppm Charlie]

The "stick the metal probe in the soil pH meters" are fairly inaccurate.

A simple soil pH test is:

1) fill a pint jar 2/3 with soil;
2) fill jar with distilled water to the top of the soil layer;
3) leave for 10 minutes, do not stir;
4) measure pH of water-soil "slurry" with a pH probe or pH paper

Generally, most 420 growers "grow" (in soil and soilless media) where the pH range of the media is 5.5 to 6.5 for best results. Sometimes the exact pH of the soil you use depends on the strain variety of 420 you are growing, 420 phenotype of that strain, your environmental conditions, lighting, etc. - also - if you are growing "organically" or via soilless mixes that use nutes and supplements only - that can also make a difference.

Best way to judge is with experience. You will "see" good results when you "dial-in" that soil-soilless media pH your 420 gals love the most.

 

[ppm Charlie]

Also, remember that soil pH changes a little over time as water, supplements and/or nutrients are applied to the plant-pot media. Generally, most growers note a slightly falling pH as time progresses (soil gets more acid) . Less falling pH with time for organic grows - more falling pH with time for some soil varieties and soilless mixes. It is always a good idea to have a "general knowledge" of the "estimated current soil pH" number or range. No two individuals are the same (that is the most likely case).