PPM, Ph, MS, how to change?

My water test out at Ph 6.6, MS/CM 2.6 and water temp 21.7C 70F, What are the best readings and how to achive. I think that if my ms/cm is 2.6 my ppm should be 1300 using the hanna HI9813-6 meter is this correct?. HELP I am useing Fox Farm Big Bloom 2 tsp per gallon now but thinking of going to go liquid Karma? What should I add and to what level and what are the changes through growth?

raise up every week depending on how many weeks u r in flower dont go over 1800 ppm to keep things safe keep your ph at 6 and give plain water for the last 10 days what u need is a booster of some sort bioheaven is good shit got all the chemacals they need its dear but worth every penny.....good luck..............

your water temps r perfect...........try not 2 go over 26f

Thank you for the help. My main question is how to read my meter. Is the EC number what I use to get my PPM. Again I have a great meter (hanna HI9813-6) but not sure how to read it.