It's nice to be able to flush them really well. In 1-gallon pots, 20" plants under 400w of MH at ~80 degrees F watering is every 3-4 days, watering to the point of runoff.
stinkyattic Reviewed by stinkyattic on . Cal mag + Ive just fitted a ro sytem can anyone tell me if i have to use cal mag in the ro water in soil grows or will there be enough in the nutes and soil(canna nutes) i know its a must in coco and hydro .dont want to put it in and od plants with mag and cal.thanks.the postman Rating: 5