The Cannabis Grow Bible (3rd edition) Ballast while the amino acids help

while the amino acids help in improving nutrient uptake and micro flora levels

chromium is often used for decorative purposes

One of the most important ways pH Perfect GMB gives you faster growth and bigger yields is through the special ingredients it contains that drive more of the nutrients in the formula into your plant faster than ever before

When the level is reached the AQUAvalve will shut off and prevent any further water from entering the tray until all the water has been consumed by the plants

The Cannabis Grow Bible (3rd edition) Ballast while the amino acids helpThe Cannabis Grow Bible: The Definitive Guide to Growing Marijuana for Recreational and Medicinal Use, Green, Greg