MojoResin
Member
I have a question for some of you hydro vets.
So I'm in the tail end of my first grow in a GH Rainforest 66 (my journal has more details about it) and have been adjusting the PPM of my nutrient solution using a digital meter so I can get very accurate. I've been using tap water which is moderately hard, around 211 ppm. Since the beginning I have been assuming that I should absorb the initial ppm of the water into the total. So for instance if I wanted 900 ppm solution I would be adding 689 ppm of nutrient to the initial 211 ppm of the water to get a 900 ppm solution. That seems to be working fine for me. However I read on some other thread (can't remember where now) that the person always calculated the initial ppm of the water on top of the desired ppm of the nutrient level. So say they wanted a 900 ppm nutrient solution they would add that on top of the initial 211 ppm making a 1111 ppm solution.
So what about it folks...should you include the intial ppm in the total or sum the nutrients with the intial ppm
Any advice is appreciated.
Cheers
So I'm in the tail end of my first grow in a GH Rainforest 66 (my journal has more details about it) and have been adjusting the PPM of my nutrient solution using a digital meter so I can get very accurate. I've been using tap water which is moderately hard, around 211 ppm. Since the beginning I have been assuming that I should absorb the initial ppm of the water into the total. So for instance if I wanted 900 ppm solution I would be adding 689 ppm of nutrient to the initial 211 ppm of the water to get a 900 ppm solution. That seems to be working fine for me. However I read on some other thread (can't remember where now) that the person always calculated the initial ppm of the water on top of the desired ppm of the nutrient level. So say they wanted a 900 ppm nutrient solution they would add that on top of the initial 211 ppm making a 1111 ppm solution.
So what about it folks...should you include the intial ppm in the total or sum the nutrients with the intial ppm
Any advice is appreciated.
Cheers