Plant Magic - Magne-Cal+ Media The enzymatically processed kelp is

The enzymatically processed kelp is clean and won't block drippers or emitters

The 13mm (internal) pipework is thicker than competitors—that alone reduces blockage headaches significantly

it's complete

Add 2ml per litre of your feed water or nutrient solution

Plant Magic - Magne-Cal+ Media The enzymatically processed kelp isPlant Magic Magne Cal+ Complete Feeding, No Guesswork As well as N, P and K (Nitrogen, Phosphorous and Potassium) plants also need an adequate supply of the secondary nutrients: Magnesium and Calcium. Plant Magic Magne Cal+ is perfect for crops suffering from a deficiency or for use along with your PK booster for enhancing Potassium uptake.