Hydroponics Indoor Horticulture  

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Hydroponics - Indoor Horticulture

Hydroponics - Indoor Horticulture represents an educational, in-depth, up-to-date, indoor horticultural growers guide that covers all principles of indoor Hydroponics Indoor Horticulture by Jeffrey Winterborne hydroponic horticulture and gardening. This book contains 110,000 words, with over 300 diagrams, pictures, illustrations, graphs, tables, 3 dimensional CAD renderings, and is printed in full colour.

Hydroponics - Indoor Horticulture examines, explores, dissects and presents a fully comprehensive step by step growers guide, relating to all and every aspect of indoor hydroponic horticulture, with complete chapters on plant biology, propagation, hydroponic systems, nutrients, oxygen, carbon dioxide enrichment, pH, biological pest control, fungi/disease, cuttings/clones, pruning/training, breeding, harvesting, equipment, grow rooms, a full history of hydroponics, and more.

This book goes further than any indoor growers guide has gone before, presented in full colour with 3 dimensional CAD renderings. Hydroponics - Indoor Horticulture quite simply outclasses any other book on the subject... In terms of literal content, quantity, quality and presentation, no other indoor horticulture growers guide can compete, let alone compare.

(Below follows a one page sample taken from the book)


Example of Extraction Fans

Like humans, plants actually need to respire 24 hours a day to survive. During the light cycle, plants will uptake faster if there is an abundance of oxygen available. As stated before, during the light cycle, the plants are constantly producing oxygen so this is not normally a problem. However, the roots of a plant, day or night, do not produce any oxygen. The plants’ internal oxygen is manufactured from the leaves splitting hydrogen from the water molecule to generate sugar, which then releases excess oxygen. When the plants are in the night cycle, then they are dependent on the air around them to obtain their oxygen.

During this night cycle, plants’ respiration drops to a steady ambient level of maintenance. This is due to the plants not wanting to use any of their stored sugars during the night cycle any faster than they are required to do so. Consequently, during this cycle, surrounding oxygen is crucial as the leaves are not processing any. However, during the night cycle, the speed of respiration is not actually controlled by oxygen levels but by the temperature of the grow room; nevertheless, it is still very important to allow fresh air to the plants during the dark period. The rate at which plants are respiring is also the rate at which the plants are growing; these two factors are completely temperature dependent.

Air Exchange

The use of fresh air is central to the productiveness of any grow room. The concept of a grow room is, in simple terms, to replicate as well as possible, and in some cases, to improve upon the conditions outside that a plant is subjected to. A grower is therefore mimicking and even super charging what one would naturally find outside, inside; this is the key to very productive plants. As you can imagine, air exchange inside a grow room is a key and fundamental part of a


successful grow room. Not only is it essential for the supply of fresh oxygen for the plants, but also for the replacement of fresh CO2 that is found naturally in air. Carbon dioxide and oxygen are simply basic building blocks for plant life. Plants uptake oxygen and CO2 to manufacture sugars which are used to fuel growth. If you get limited oxygen and CO2 to the grow room then the plant’s growth will slow to a crawl.

This situation is very easily rectified and is also inexpensive to buy and employ. Investing in a good extraction fan is all that is required. An extraction fan should be mounted at the highest point of the grow room so as old, hot air rises, the extraction fan will suck this old, hot humid air out and through this action, creates a positive vacuum in the grow room. Making some inlet hole for fresh air to come in at a low level will make sure that air exchange can be maintained for your plants.

Employing an extraction fan has many benefits. It ensures a good supply of fresh air and therefore, a good supply of oxygen and of CO2. It also removes humidity, stale, stagnated air, and heat. If you do not employ extraction, then you can liken the grow room to an oven with the light becoming the heat source within the oven. If you do not vent out hot air, the hot air is allowed to build up, just like in an oven, and slowly but surely, the grow room temperature will rise to levels that become out of control, and if left, can result in no growth for your plants or even complete annihilation of your living garden. So, as hot air rises in the grow room, it is absolutely essential to vent this hot air out. Through venting the hot air out and due to the vacuum effect, fresh air coming in from lower vents will reduce the overall temperature inside the grow room. In this way, you can maintain a level that best suits your plants.

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