Quote:
Originally Posted by SQWIBB
Interesting, I never thought of irrigation water building up salts in the soil...thanks...now I got something else to worry about 
I used epsom salts on my plants a few years back and noticed the salts in the bottom of my grow bags on the outside, white staining in appearance and definitely salt. |
Epsom Salt is magnesium sulphate, with a relatively low salt index (44).