You can try it but they tend to raise the sodium content of the water while removing the minerals you want such as calcium and magnesium which will cause deficiencies so water softeners generally aren't reccomended for hydro growing.

Well at least you have the ph down good.....
Weedhound Reviewed by Weedhound on . I thought I was doing everything right My friend found some really good "dro" there was a couple of seeds in it,she decided to throw them in some dirt,a week later she was amazed because they started to grow,She gave me 3 plants,one died.I grew hydro before and I noticed a very fast growth rate compared to soil,I took the plants out of the dirt and I transplanted them to my bubbler,in the meantime I sprouted 7 other seeds that I had.Now I have nine plants in a 3 gallon bubbler(the plants that she gave me are about 4 weeks,my Rating: 5