While LEDs provide superior results in core coverage area (3x3 and 4x4), they are not as effective on the periphery growth areas. We have a number of customers using Stealth Grow lights in what we call Hybrid Systems. By combining HPS and LED lights in an equal, checkerboard patter, growers can get the benefits of LEDs and improved coverage area of HPS.
Grow Room Setup | Grow Room Design
At Stealth Grow, we supply the finest quality grow lights available today. Successful grow room setup and grow room design takes more than just a good light. There are five main factors that a grower must understand and control when setting up an indoor grow room or garden: light, air, water, nutrients, and growing medium.
However good your light is, you must address all these factors in order to be successful. To help growers just starting off, Stealth Grow provides these guidelines in order to create a productive grow room design.
Which light is right for you?
In an indoor grow room, you are trying to imitate the sun, the earth's primary source of energy. To replicate this spectacular force and thus be able to grow high yielding plants indoors, it is necessary to choose a lighting source that fulfils the intensity requirements of plants. However, it is also important to be able to maintain a controlled grow room environment. With LED technology you can provide plants the light that they need without excess heat and electricity.
The Right Environment
The right environment is crucial for your garden's success. Key elements to a productive grow room setup include humidity, temperature, CO2 (Carbon Dioxide) and air circulation/ exchange. The ideal humidity for a grow room design falls between 40 & 60 percent. While some plants prefer higher humidity, extra moisture can lead to problems with fungus and disease. Grow room temperature should be consistent between 68 – 75 degrees Fahrenheit. Temperature changes will affect humidity levels. Avoid drastic temperature changes to keep plants from suffering stress.
Plants absorb CO2 in order to grow. Assuming you have good air circulation/exchange, your grow room will naturally have between 300-400 PPM (parts per million) of CO2. Enriching your atmosphere with higher levels of CO2, 900 PPM, will accelerate growth. Higher levels of CO2, however, cause higher absorption of nutrients. Remember, if you are enriching with CO2, your plants will require more nutrients. If you choose not to supplement with CO2, you must pay close attention to air circulation/ exchange so that there is an adequate supply of CO2.
Light Hanging Guide:
When your plants grow too close to HPS bulbs, the heat will burn the tops (the most valuable part) of your plants. LEDs will not burn your plants. We have seen large plant flowers literally resting against the glass panels protecting our lights. It is true also that the more light your plants get, the bigger they will grow. However, with LEDs you want to make sure that you are covering as much canopy space as possible. Therefore, we recommend hanging our lights 18” above a fully flowering canopy.
|Light Distance||Coverage Area|
|Babies and teenagers:||3-4' above canopy||SG Veg:||4' x 6'
|Mature Vegetative plants:
(plant height 18" and taller)
|2-3' above canopy||SG602:||3' x 3'|
|Flowering plants:||6-18" above canopy||SG1250HO:||4' x 4'|
Young plants need to be treated differently than fully mature and flowering plants. For example, flowering plants can handle and even enjoy ppm levels as high as 1500ppm, whereas young immature plants would almost certainly be shocked, stressed and stunted by such high nutrient levels. The same is true for light.
pH and Nutrient Absorption in Plants
pH - It's Important!
pH (potential hydrogen) measures the acidity or alkalinity of your solution on a scale of 0 – 14. The most important thing to remember about pH is to avoid extremes.
In soil, optimum pH is between 6.5 and 7. Hydroponic solutions perform best with pH slightly more acidic than for soil, ideally from 5.8 to 6.8. Within these ranges plants can absorb nutrients most efficiently. If the pH is too low (acidic), acid salts chemically bind nutrients; pH that is too high (basic) causes nutrients to become unavailable. Another problem created by an imbalance of pH is the build up of toxic salts, which prevents roots from absorbing water.
Every full-point change in pH indicates a ten-fold increase or decrease in acidity or alkalinity. For example, water with a pH of 6 is ten times more acidic than water or soil with a pH of 7. Water with a pH of 6 is one hundred times more acidic than water with a pH of 8. Because this scale is so sensitive, it is important to have an accurate way of measuring pH. Measure your pH levels with a soil test kit, litmus paper, or electronic pH tester