Premium Manifold 2X5 (Dry fit)

Replaced 2 UV lights 65 W. I backwashed the filter 6 times. I added Algae control and clear pond. You have to at least do a backwash a week! Also you need to add every week some algae control product! Keep clean the skimmer basket and pump basket weekly! I stayed in site 1 hr 10 mins.