Soil with possible PPM problems?

Blakrex

Member
Some insight from you guys would be much appreciated.

So here's the dealio, I have several young plants that are around 2 weeks cloned old. Just got a new PPM reader in so I decided to test the run off on a couple plants, one that's doing okay and the other that's doing great (plus measuring tap water just to get an idea if the meter is reading correctly). I watered until I had about 1/4'' deep water in 14'' runoff trays. The tap water read around 80ppm. The okay plant read at 1370ppm and the plant that's doing the best (no nut burns or anything) read at 8330! Uhh... what?! That was my first reaction.. They are in 5 gallon containers, normally all in bags, but I happened to pot 1 of them in a plastic container. It's the plastic container plant that has the best growth and reads the crazy ppm. My thought is to set the plant up so I can water it through more and get a better reading. Thoughts? Has anybody else ever had crazy soil readings like that, is it common? I don't remember reading any others having high soil ppms like that..

The soil is a recycled set of two 3.8cuft bales of Sunshine Mix #4, with an extra 2cuft of "Grow Stones" for extra aeration, remixed with 1/4 dose of Earth Juice's Rainbow Mix Grow 5-5-2 bat guano and 1/4-1/2 dose of Down to Earth's Bio Live 5-4-2. Sat and mixed in a large container for 1 week before repotting. Really doesn't seem to me that there should be an insane PPM like that. So some help will do me well.

Thanks for reading guys/gals.

Edit: Maybe nuts got built up in the drain tray, so it mixed with that and gave crazy readings? Maybe put in larger (clean) water runoff tray and try getting a reading again?
 

Blakrex

Member
ppm doesnt mean shit for soil runoff
Hm.. Probably just catching the random particles that came off the soil during watering, eh? Bummer was hoping to be able to measure the concentration of nutrients within the soil. So soil water runoff isn't measurable with a PPM meter, long story cut short?
 
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