well in the pump basket you can see a decent sized bubble on the lid from time to time backwashing seems a lil light as well I was vaccuming to waste today and just had enough suction and the flow rate out of the hose wasnt as it used to be as for the pump and filter specs its a watsons ball filter the sticker is kinda faded but I can make out aqua something on the filter ball on the pump says Hi flo waterway 1.5 HP