This is our first year with an inground pool. We have a 9 year old, Jacuzzi 250L Sand Filter w/Cygnet 1hp motor and pump. Yesterday I noticed a small stream of water coming from the backwash port while the filter is in 'filter' mode. I don't think this is normal. It's more than a drip...it's a small steady stream. Any help is much appreciated. Thanks in advance.