PRO-XL has put together a unique growth feed. This feed contains all the necessary nutrients the plant needs for optimal growth. Not only does it contain all the nutrients the plant need, but it is also combined in the perfect ratio. Using the PRO-Xl growth feed, you increase your growing results. The growth food is simple to use. It consists of an A &B component. This makes the growth feed very complete. The nutrients are also extremely concentrated! Because of the completeness of the growth feed, it is perfectly suitable for use when you cultivate using CO2.