The citric acid is the problem!! It has a shelf life of about 2 minutes.. use it ONLY in emergency because it only does the job for a short time meani g your ph is off almost all the time. They need 13 different elements and if your short one it locks out others. You need nitrogen, phosphorus, potassium, molybdenum, magnesium, zinc, boron, cobalt, sulfer(bloom only), iron, copper, calcium and manganese.. without even one of these your not running an optimal growth and your yields will suffer. This is why growing organic is extremely costly! They make an all in one product now thats a big help (gh flora nova). Try it. Don't concern yourself with ppm's for now just stick to basics. Organic growing isnt worth it imo and thats from experience unless of coarse you have a lot of cash. After getting everything needed your better off goin to the dispensaries lol. Try getting some ph up and down you'll thank me later.