This is the CAP automated flow control and repeat cycle timer. These two units control the pure oxygen that your plants will require and thrive on during flowering season. this setup was used for approximately 2 months towards the end of the growing cycle with very impressive measurable results! How this works is this.... Simply put some plants have a very pronounced Spike in development when given a controlled amounts of pure oxygen during the flowering stage. Plants growing hydroponically and other ways indoors will benefit from this process.
If you were serious about getting everything out of your crop, and it being the best it can be do not sidestep this process in your growing. If you haven't tried it before please do I believe you will be as impressed as I have been. both the timer and the regulator for sale here were top of the line a few years back. they are high quality built and will last many many years to come.