Pump is def strong enough, but the cover is connected to (read: is) what keeps the plumbing sandwiched to the liner. We used a Glad bowl with a hole cut to go over the grate but it suctioned to wall so hard that it collapsed on itself. We had to turn off the pump to remove it, and everything that got vacuumed floated right back in. Boo. Next season we will install a real thru the wall skimmer, but until then...