i can't speak spefically for your local water, but you shouldn't need calmag with tap water. do you have any way to check your PPMs? you normally only need calmag with distilled or reverse osmosis water.

did you pre-wash your hydroton?


-shake
headshake Reviewed by headshake on . First time hydro grower in waterfarm Hello everyone. I've been an avid reader and I'm here for help. Here's my questionnaire. What is your experience level? (first timer, novice, experienced...) First Timer! Your Equipment: .1) Type and wattage of lights. (MH, HPS, CFL's, tube fluorescents, LED's) 1000w MH Rating: 5