Mosser Lee Moisture Meter Questions.

PBFseedco. said:

i use one of these as we speak, as long a you follow the directions the meter should work. Make sure to use the meter after you water when the soil is wet..... the light meter sucks and the PH meter isn't perfect but i just harvest some smelly NL using this instrument.

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Downfoemythang said:

Is a PPM a must when growing in soil?

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Elzabob said:

A ppm meter is crucial for any serious mj grower, whether its a soil or hydroponic application. You need to keep an eye on the electric conductivity (ec) or ppm of your soil very vigilantly if you want some bitching ladies. In case you don't already know salt can build up in your soil when you use synthetic or organic nutes. And when this happens you get problems such as nutrient toxicity or deficiency/lockout. Make sure your ppm for veg does not exceed 600 (thats a common denominator for most varieties of mj) and does not exceed 1000-1200ppm for flower (also another common denominator). You can gauge your plants ph and ppm in the solution prior to feeding and then also measure the ppm and if need be the ph of your plants runoff to see where things stand. If the ppm of your runoff exceeds the "ideal" levels then give it a straight water ph flush to leech out any excess salts. But to avoid that all together a good flush once a month should leech out any salt and fert build ups. And by the way what nutes are you using for your feeding regimen? []Deace!

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Downfoemythang said:

Thanks for the info. I have fox farms grow big, tiger bloom and big bloom, they came with the soil kit I bought. It appears I need 3 others in order to cover all my bases. I haven't started them on any nutes yet as this is my first grow. Im gathering all the necessary items together then plant some good seeds and go from there. My $10 meter has my soil pH @ 8. Would adding vinegar to the soil hurt the plants? On the package of the meter it says add sulfur to lower pH would that be safer?

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Downfoemythang said:

Thanks for the info. I have fox farms grow big, tiger bloom and big bloom, they came with the soil kit I bought. It appears I need 3 others in order to cover all my bases. I haven't started them on any nutes yet as this is my first grow. Im gathering all the necessary items together then plant some good seeds and go from there. My $10 meter has my soil pH @ 8. Would adding vinegar to the soil hurt the plants? On the package of the meter it says add sulfur to lower pH would that be safer?

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Elzabob said:

Yea vinegar and other natural ph buffers are not adequate enough to fully buffer your medium. What I am saying is that yea you might buffer your solution to the proper ph level with the use of natural substances but it will not retain the buffer in your medium. After about a day or so the vinegar or sulfur will deteriorate which will lead to either an increase or decrease in you soils electric conductivity or ppm. So like your fellow poster stated. Save yourself the fuss and get some potassium silicate (ph up) or some phosphoric acid (ph down) from the hydro store. And I would go with general hyrdroponics (lucas formula) instead of fox farm. Fox farm has been banned in several countries due to the impurities in its nutrient solutions. And they do not follow most countries fda approvals. So yea thats just my 2 cents. []Deace!

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