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Introduction to Nutrients General Information Nutrients are arguably the most vital component of any hydroponic system. If you have read the article "What is Hydroponics" then you already know that plants grown hydroponically are grown in a medium that supplies them with none of the vital nutrients they need. The whole idea of hydroponics is that the nutrients plants receive can be controlled. So, if the medium (sand, gravel, rockwool etc.) doesn't supply the nutrients, then something else has to. And this is what this article is about. Rather than relying on good soil to supply nutrients (as in conventional agriculture) the nutrients are supplied in the water that is given to the plant. So in a hydroponic system, all you need to do is add some nutrients to the water that you give your plants. If you read the article "Hydroponic Systems" you will learn about the different ways that water can be supplied to the plants. Back to nutrients ... There are many different types of nutrients, ranging from general purpose, to nutrients designed specifically to promote the growth of leaves, or buds and flowers. The main types then are, General Purpose Nutrients, Grow Nutrients, and Bloom Nutrients. There are also various types of specialist nutrient additives that can be used in addition to these basic nutrients. This article will just deal with the three basic types. First though, let's briefly discuss how nutrients help your plants grow. How Nutrients Help Your Plants Grow General Purpose Nutrients General purpose nutrients are useful for a wide variety of plants, both indoors and outdoors. We sell various The Hydroponic Warehouse supplies a well renowned General Purpose Nutrient, produced by R & D Aquaponics. This nutrient is used at the rate of 5-10mls per litre of water. It is suitable for a wide range of plants including tomatoes, cucumbers, strawberries and herbs as well as indoor plants and flowers. General Purpose Nutrient comes in liquid or powder form (where 1 gram is equal to 5mls of the liquid), and is a soluble, complete and balanced nutrient designed to promote the growth of your entire plant. Prices are as follows (these are subject to change without notice): Grow and Bloom Nutrients Most of the common hydroponic nutrients come in two different formulas, Grow and Bloom. The Grow formulas are used from the early stages of the plants life as a seedling until the fruit or flowers set. Once this has happened the plants are then fed with Bloom nutrient until the fruiting or flowering stage is over.
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