The water tanks available at London Grow come in different sizes, shapes, and capacities. Each tank is solid and can withstand general wear and tear of any grow room. You'll need to maintain the water tanks to keep your hydroponic grow system in top shape. Change the water from time to time to ensure it's fresh. Test the PPM, pH, and EC levels consistently. If the levels are off, your crops will suffer. Control and adjust your system to enjoy top-quality and high-performance crops.