This is my frag setup. The Dual system is up and running and the Quad system is in the works. It will start cycling on Monday when my supplies come in.
The valve is on top of the skimmer cup and if it were to fall off will not fall into the water as the line is not long enough.
I have a basic CO2 reactor filled with media that I have to change about every 3-4 weeks. All of these wires at one time were nice and neat until I had to replace the power head in one of the systems and I just have not gotten around to cleaning it up again.
You can see how the reactor and valve are plumbed in so it basically takes the air in the skimmer and recirculates it back through the media over and over.
And the Skim just drains into a locker which makes sure that if for some reason the skimmer would overflow it will fill up the locker. I will be installing a float on the top of the locker to shut off the skimmer if it gets full for some reason. I have water sensors on the floor so if it started to overflow they would trip and shut the system down sending me an email at work as well as a phone notification. The float I install on the top will do the same thing once I install it.
If you need some more help getting the code installed into your apex just let me know and you can give me a call and I can walk you through it.