In case you need to locate RTC in another location, you can use an extra tube to do so. There is an extra tube and a connector included in the Kit. It is as twice long as the existing tubes. Connect existing tubes with the connector as new return tube, and use the extra tube as RTC inlet. Noted the extra tube doesn’t come with insulation.
You can also customize the Root Chamber box. It is made of EPP foam. Very easy to make ports on the wall. But remember to cover old ports, as the light leaks are not good for root chamber.