Not sure, sounds like what i had, witch was becuase i was using rain water, witch doesnt have calcium.

I have heard thaT bottle water isnt good for plants.

Switch back to your tap water(unless its terrible)
stoned88911 Reviewed by stoned88911 on . Help,leaf problems E-indoor or outdoor=indoor E-soil, soilless, coco, aero, or hydroponic=soil E-specific medium=promix and potting soil CSL-Soil type/brand HCL-Hydro/aero/soilless system type SCL-Anything you have added to the soil=worm castings,bat guono,perlite SCLR-Soil or slab runoff pH=7.0 E-Water source=was using tap water from a well,now spring water out of the bottle E-Source water pH=was 6.2 tap water,now 7.0 HRT-Source water EC (if hydro) Rating: 5