Help with ZEOvit reactor please

[andestang]

I have a point on my supply line that is higher than my Zoevit material that has an airline tube plumbed over to the top return line/pipe. When the pump is on the water from the airline tube just goes into the return and when the pump is off the airline tube will cause the break in the siphen. When you go to run full time just plug off the airline fitting on the supply line or leave in place for any power failures.

Originally Posted by surgeonfish

How do you keep the water level in your ZEOvit reactors above the ZEOvit?

I have been using the ZEOvit system now for 2 weeks. I bought the GroTech ZF110 filter/reactor. I am turning the feed pump on and off at 3 hour intervals. I somehow thought that when the pump was off the filter remained full of water and the ZEOvit would stay submerged. Silly me. I checked the filter tonight and found that when the feed pump is off, the reactor slowly drains down to the water level in my sump leaving >50% of the ZEOvit dry. How do you keep the water level above the ZEOvit. I don't want to raise the water level in the sump if possible.
Thanks