🎬 Free course
Nutrient solution in practice
Water, fertiliser, stir – done? Almost. The order in which you mix is not folklore but the answer to a piece of chemistry you only have to understand once: concentration makes salts precipitate, dilution makes the same salts harmless. This course explains why concentrated fertiliser is kept apart, why the order matters when mixing, how you actually recognise a solution that has gone off – and why your EC meter tells you none of it. Two lessons, no recipes.