Hydroponics - Indoor Horticulture represents an educational, in-depth, up-to-date, indoor horticultural growers guide that covers all principles of indoor 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.

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