Growers Ark CoCo food is formulated for growing in a CoCo based medium using a range of feeding methods (top/bottom feeding, drippers etc). It is manufactured from high grade salts and EDTA chelated trace elements for the maximum ease of uptake by the plants. It also contains extra trace elements as sulphates to provide a secondary source of traces for the plants. Our CoCo food contains potassium humate (what makes part B brown), this is a large molecule of the same chemical family as humus (one of the things that makes a good soil good). Humate is highly active in soil (or any other growing medium) being involved in the uptake of nutrients by plants, microbial activity and the cycling of nutrients. Studies have shown that plants grown in a medium rich in humic substances are more resistant to stress and have bigger root systems. For further information on humate please see our root tonic product information or the separate humate data sheet. The hard water formulation contains high grade nitric acid to neutralize the hardness and reduce the need for Ph adjustment, you will need to use less Ph down when using our food than with some other companies’ products.