Water hardness value help

[COflower]

Hey, i am trying to figure out the hardness of my water. I tested my water and it is coming up as 40 on my Hanna combo meter. Does this mean that my water hardness is only 0.1? I bought the Canna substra(HARD) nutrient line. Doesn't 0.1 mean that my water is soft?

Appreciate any input

 

[COflower]

Also, since the ppm of the tap water i use is 40 and say i need 1000 ppm total for my nutrient/water solution; would that mean that i need to add 960 ppm of nutrients to reach the desired 1000ppm?

 

[Mr John]

Also, since the ppm of the tap water i use is 40 and say i need 1000 ppm total for my nutrient/water solution; would that mean that i need to add 960 ppm of nutrients to reach the desired 1000ppm?

You got it.

 

[Nullis]

0.1 EC or what? 40 ppm doesn't really constitute "hard water", which generally is more like 75-120+ ppm.

 

[JohnnySocko]

0.1 EC or what? 40 ppm doesn't really constitute "hard water", which generally is more like 75-120+ ppm.

he he...shoot, even 120ppms ain't all that hard... here in this part of the country we make driveways with 2x4 filled with water, once the water "dries" we have cement