Gravity feed to Nilsen Reactor

[lmeyer]

Okay, so it looks like I am buying a second hand Nilsen Reactor. Now I have to figure out the easiest/most reliable method of plumbing it into my system.

 

I currently have my RO/DI filter filling a top off reservoir, with the input from the RO on a float valve. The reservoir is higher than my sump, so I gravity feed the sump from the reservoir with a float valve in the sump.

 

I will want to put the Reactor between the reservoir and the sump. I can easily move the feed from the reservoir to the sump to feed from the reactor and continue using the float valve. What do I use to feed the Reactor from the reservoir then? I can't just do a gravity feed, the Reactor will keep filling even when full. I prefer not to use a dosing pump since that ties me down to a specific amount per day.

 

Thoughts and solutions?

[BeltwayBandit]

I have a Nielsen reactor that I have plumbed in line from my reservoir to the sump. It is controlled by a Tsunami AT-1 pressure/float switch. I run a Quiet one 1200 pump, 40' of 1/4" tubing. I have it plumed into the overflow on the tank with an air gap. I have a 1/2" all plastic check valve on the pump to prevent backflow. All of my top off water goes through the reactor. It works quite well for me.