Finally got around to installing the liquidator. Thanks for all the advice/tips in this forum. My problem is I'm still getting air in the line right after the flow meter. I'm using the 1/4 supplied vinyl tubing. I tried teflon tape on the threads on the the flow meter, then tried the permatex #2....it is better, but it still entrains air which gets sucked into the strainer basket/filter. I only have one check valve in place, in the "in line", after the filter to the liquidator. Any thoughts/suggestions would be appreciated. I really would like to get this thing up and running. Thanks to the advice in this forum, I was able to use the strainer basket connection, and I cut in a "T" fitting between my filter and heater so that I can plug that fitting at the end of the season.