Emptying pump basket this morning. Everything sounded normal prior to shutting pump off. Emptied basket and resintalled/re-started pump. Pump wasn't priming or drawing water like normal. Shut it off right away, checked everything over. Nothing in the impeller that i could feel. Re-started but still wasn't pulling water like it should. Finally went and checked skimmer, pulled diverter assembly out and noticed the sliding flapper valve on bottom of diverter had broke off and was blocking half the suction line in bottom of skimmer. Removed and everything is working fine now. I have googled and searched but want to confirm that running with no 'flapper valve' on bottom of diverter is fine.