Soilless growing takes a lot of work and patience. But that doesn't necessarily mean that you have to break your back in keeping and maintaining your hydroponic system in top shape. Here at Hydrogalaxy, we offer the best selection of meters, testing and pH equipment you will ever need to make growing with hydroponics much easier. We have combination meters, pH adjustment products, TDS meters and all sorts of replacement parts suitable for your set-up. With our help, you are assured that your system is well and working in perfect condition--the way it should be!