(I apologize for ‘doubling’ this post from ‘Autoflowers’…but I think this is the right category)
White Widow CBD Autoflower
Foxfarm Soil- Happy Frog 3-gallon plastic pots
All waterings up to day 21 have been from my tap water (left overnite to release any chlorine)
Tap water has a PPM of 343
PH has been around 6.3
All three (3) plants look very healthy. One plant looks like it has a flower starting? The others do not, yet.
Today, my PPM meter came. I put 1/8 of a teaspoon of Foxfarm Tiger Bloom and 1/8 of a teaspoon of Big Grow in a one (1) gallon jug of distilled water. As they had not been watered in 4 days, I split the gallon three ways and gave them all thorough watering…
The runoff was extensive as this was the first time I used such a large amount of water, as well as watering the entire top of the pot…as opposed to just a smaller ring previously.
I collected the runoff and combined them all together.
The PPM read 1,702
1.) what does that PPM number mean?
2.) Do I subtract the tap water’s PPM of 343 from that number since I have been watering them their whole life with said tap water?
3.) If so, does that mean the actual PPM is 1,359?
4.) I have some rocks in the very bottom of two of the pots…I thought to enhance drainage. All the pots also have holes and a water catching tray. But will those rocks skew the PPM of the runoff?
Any input would be very helpful as I am at that stage now on my first grow.