apex flow sensor

Hey. I added a flow meter on the return section of my setup, but I see it constantly fluctuates (every day), which is very strange. I am wondering if it is perhaps the way I have plumbed it or if there is something wrong with my meter or hardware? I dont think its the meter as the overflow pipe...

Several unused or unopened Neptune Apex Gear. Used items worked at time of removal and guaranteed to work or unconditional money back guarantee. Unopened items Sold “ As Is” obviously, I’m not a retailer and don’t do returns or make manufacturers guarantees for unopened items (any issues take...

First, I apologize for typing this on the go as @revtree hasn’t released the R2R app. Please excuse brevity and typos! I am being restricted by connections and tubing diameter, resulting in only 350-370 GPH max with a Sicce 4.0 and 300-320 GPH with Sicce 3.0 from the sump using nothing but a...