@ProfDoty, I actually purchase all of my water, just natural spring water because my tap water has a very high ppm reading, so if I were to use that along with my nutrients I would receive major nutrient burn. I just toss about 8 500ml water bottles with ph balanced water in the freezer for about 4 hours. This typically freezes about 50% of the water in them and leaves the rest ice cold. I then water like normal and take the ice left over and place around the base of the plants.
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