cool make sure you top off with water to keep your plants from getting toxic shock with big lights...more heat will sometimes cause the plants to use more water than nutrient in the mix. i.e. the other night my AC went out...I went in next day and biggest skunk in flower had used 2 to 2-1/2 g of water...the EC was up to 4...and that is like 3000ppm...I believe
I had to just ph the rowater and fill 'er up