rcb
Well-Known Member
I've been collecting some TDS numbers over the last month. What do you all think?
Tap water - 50 - 70ppm TDS.
Fertilizer water - avg about 850ppm TDS. (25/75 MSU/K-lite)
Rain water (collected as free fall not run off) - 9 - 17ppm TDS.
And then one day, after about 2 inches of rain had fallen, I squeezed out spag that was in a pot, 132ppm TDS. (This was suprising as I've always been told that spag "holds" fertilizer salts.)
And at the same time, I set one of my Catts (potted in LECA) in a cup, allowed just enough more rain to fall to collect, and TDS was 98ppm TDS. I should have done this as it was first raining, but couldn't.
Do these make sense? - especially the water collected after rainfall from the pots - I am taking this as the rain does significantly flush the pots.
Tap water - 50 - 70ppm TDS.
Fertilizer water - avg about 850ppm TDS. (25/75 MSU/K-lite)
Rain water (collected as free fall not run off) - 9 - 17ppm TDS.
And then one day, after about 2 inches of rain had fallen, I squeezed out spag that was in a pot, 132ppm TDS. (This was suprising as I've always been told that spag "holds" fertilizer salts.)
And at the same time, I set one of my Catts (potted in LECA) in a cup, allowed just enough more rain to fall to collect, and TDS was 98ppm TDS. I should have done this as it was first raining, but couldn't.
Do these make sense? - especially the water collected after rainfall from the pots - I am taking this as the rain does significantly flush the pots.