CANNA Terra Professional Plus is the purest potting mix possible for plant cultivation. It also gives the best effects with CANNA TERRA nutrients. The formulation is specifically developed for indoor, grow-room situations. Of course, it also gives good results outside. The medium is pH-adjusted for long-term control with a lime charge large enough to last an entire cycle. It has a mineral-nutrient starter charge that adjusts the initial level of nutrients up to a good beginning charge, correcting the ratios to work perfectly with CANNA TERRA nutrients. The special structure provides optimum amounts of air and water in the medium. CANNA Terra Professional Plus contains trace elements and chelates, which protect the plants during early growth.