One of the several advantages of choosing an active hydroponic system is that you can easily measure and accurately control the strength (cF) and pH of your nutrient solution, so it's exactly right for your plants. This allows you to enjoy faster growth rates and higher yields - and we have the measuring and adjusting products you need. As always, for advice on nutrient and pH management, visit one of our stores or call 0845 345 5178 for expert advice.