Hello, I replaced my 1-1/2 hp whisper flow with a Hayward Ecostar about 3 months ago and now I have bubbles on my returns and the pump basket never fills up with water and has bubbles on lid. I tried to turn on solar and with the pump at full speed I can't clear the bubbles from the returns wit solar on, the panels are about 18 foot high on a two story house. I have checked all fittings and put plumbers silicone on both drain plugs on pump and re lubed the pump lid gasket, also I took a hose and ran over the unions and pump but nothing shows up. The whisper flow worked perfect with the same setupI'm stuck! Thank you for your help.