Something ive been wondering…i drain, wipe down, and add a fresh batch of nutrients w/fresh distilled water every week, and ive been doing this since the start, but if i started with 5 plants, and now i have 2, shouldnt i be able to go longer in between res changes? I feel like im wasting nutrients. Or is it required bc the 2 plants i have now are much bigger than the 5 i had?
Edit: sorry its an aero/hydro setup. 8 gallons of water is what i start out with each week.