I\'m using a wing reflector 250w mh hps switchable light. Its about ten inches from my tallest plant. Right now I dont have a steady air ciculation but for now I\'m using a circulating fan and open basement windows. I have them on a 16day 8 night schedule. The soil I\'m using is fox farm ocean forest. Big plants are in 3gal smart pots and smaller ones in fiber pots. My water source is well water ( I think thats the problem) I check the ph with strips and a meter ph is always good and I use ph up and down to adjust. Nutes I\'m using is a starter kit including B.C. grow boost bloom, thrive alive green red, Magical, Sugar daddy, and Rt 66 and awsome blossoms. I feed them every three days as directed, in between feedings I water them just enough so there not dry. My grow room is in a basement a room thats probly ten feet by 15 or so right now I\'m only using about half of it though. THe temp during day is about 75 when lights on and about 65 when off, my rh stays about 50 percent constantly. I have no signs of insects and have worked very hard to keep it like that. I am growing an Indica from seeds and is not an autoflowering. The problem Im having is leave edges curling up some brown spots and on my smaller plants leaves twisting and contorting, I have been trying everything to fix it, and I think the problem is my well water, I have very high calcium water and have read that hard water can cause a potassium lock out. Some one please help me I hate to see my plants suffering. If needed I can provide pictures if needed some one please reply and help me out thanks alot