There are several intricacies to light deps that make them more productive and easier to source organic nutrients, help infected plants, return to health and more. For instance, growing your plants with aquaponics makes nutrients and beneficial bacteria as well as nitrogen readily available to your plants, and sources it organically. Ammoniacal nitrogen and urea are often sourced in an inorganic way, making these forms of nitrogen more challenging to be taken up by a plant's root system and more likely to cause a chemical burn. Most importantly, sourcing nitrogen from either of these two will make the result non-organic, or chemically grown. This is not ideal.
Ideally, in an aquaponic environment within your light deprivation greenhouse, a natural balance will be formed between the fish and their waste products circulating to hydroponic grow beds, and the plant roots will, in turn, clean the water so that it can be recirculated back to the fish. Tilapia is one of the most common species to work with. Some cultivators who specialize in aquaculture and aquaponics have had success with Trout, Carp, Perch, Bass, and Koi, which is a Japanese breed of Gold Fish.
With double-layered light dep greenhouses, an extra barrier for moisture exists, meaning that the dehumidifier doesn't have to work as hard to clear moisture from the air, and also that no new moisture is allowed in from the outside. First, the door to the outer, larger hoop building is opened, then it is shut. An optional step is for workers to then put on a white fiber full body suit with booties and a respirator before entering, but for most grows this is not necessary. After closing the outer door, the inner door (the one to the smaller hoop containing the greenhouse) is opened. The worker enters, and the moisture and pests do not. It is important not to contaminate the greenhouse with mites, aphids, or other pests that might be attached to worker's clothing and in their hair. It is imperative that workers only enter the inner light dep greenhouse after having showered and put on fresh clothes that have been washed with soap and water. Any contaminants that reach the inner greenhouse will eventually end up on the plants, so this step is essential.
Light dep greenhouses can increase the number of harvests from one a year to three or four per season. This is a game changer. If three harvests are made, this is a 300% increase in production. If four harvests are made in one year, this is a 400% increase in production for that year. The initial investment is really the only barrier to setting up one of these light dep grows yourself, as well as factoring in running costs for electricity powering the ventilation fans, exhaust fan, and lights.
