Avoid deficiencies when growing in coco coir - and say goodbye to pesky pH meters! Because growing in coco coir can lead to puzzling nutrient deficiencies, you need a two-part staple that will solve this problem for you. Here's a guide on how to do that with pH Perfect® Sensi Coco Grow A+B. First, it provides just the right amount of potassium to avoid toxicity of this element, which is already abundant in the coco substrate. Second, it contains chelated forms of magnesium and calcium that don't bind to coco but instead feed your plants. Third, and most importantly, it provides the missing piece in the coco puzzle: various chelated forms of iron that eliminate iron deficiencies that can be caused when growing in coco. And if that wasn't enough, you can throw away pH meters and pens forever! Patented pH Perfect® technology keeps your pH at the right level every day, all week long, without you having to measure or adjust it. The flowering phase is a crucial time and when growing in coco coir you need to manage it properly. That's why in pH Perfect® Sensi Coco Bloom A+B you will find everything your high-quality plants need to form big and strong buds! You don't have to worry about balancing the pH at first because pH Perfect® technology will do it for you until harvest time. In addition, your plants will benefit from micronutrients that could be lost when growing in coco coir, such as calcium, magnesium and most importantly, several chelated forms of iron - all of these substances are stably supplied to your plants when they are most needed. This safely eliminates the possibility of nutrient deficiencies.