Hello is anyone else suffering with bubbles in there reagent tube?. My bottle is directly below my dosing pump and the tube is 6” long with no kinks and flows in virtually a straight line to the pump head, After a day or 2 I can see micro bubbles in the tube below the dosing head and I cannot work out how there getting in there, can they be forming somehow in the reagent? It’s frustrating as it gives an inaccurate reading sudden drops in measured value ( ie 5DKH) and so I daren’t let the KHD control the doseing yet.