The translucent 1/4" line is the water line coming from the elevated res. outside of the cab.
It leads to a SmartValve unit. The smart valve is designed to allow the res to refill when the water level gets down so low (plants using it up). The valve will shut off when it gets a couple inches deep in the pipes, and won't refill till it is nearly empty. So basically there is no waste water at all with this system and everything that gets put in the pipes gets consumed. Since the nutrient rich water is allowed in only, and there is no recirculation of the water, it is essential that there be mondo air in the res. and the pipes.
The blue line is coming from the air pump and is connected to the wand..which deadheads in the pipe.
I made sure you can see everything the res has and all the details...so look close and it may become clearer to you.
It leads to a SmartValve unit. The smart valve is designed to allow the res to refill when the water level gets down so low (plants using it up). The valve will shut off when it gets a couple inches deep in the pipes, and won't refill till it is nearly empty. So basically there is no waste water at all with this system and everything that gets put in the pipes gets consumed. Since the nutrient rich water is allowed in only, and there is no recirculation of the water, it is essential that there be mondo air in the res. and the pipes.
The blue line is coming from the air pump and is connected to the wand..which deadheads in the pipe.
I made sure you can see everything the res has and all the details...so look close and it may become clearer to you.