Plant growth seems stunted. Bought a PPM meter and discovered my tap water is close to 800ppm which is about the limit for this stage of growth. With the light nutrient solution I had mixed it was about 1,100ppm. Did a light flush with spring water(300ppm). Made a new solution using RO water(60ppm) and with nutrients we are at 650ppm. Going to see how things go from here. Experience is a great teacher.