so my water is around 280ppm what i be better off getting bottled spring water a gallon is only £1
im using soil and only 3 plants atmThats going to add up fast. I would consider a Berkey filter system or BoogieBlue or something similar, or maybe even a whole RO system if its cost effective. Not sure how many gallons a day you use but that spring water is going to add up quick and Im thinking a decent filter would pay for itself on your first grow. Ive never done hydro though so someone else can probably better assist.
im using soil and only 3 plants atm
so my water is around 280ppm what i be better off getting bottled spring water a gallon is only £1