Best filter for 100 gallon outdoor goldfish pond

[Linda4fish]

Looking for some ideas on the best filter for an outdoor 100 gallon goldfish pond. 
(fancy goldfish)

I was considering two large sponge filters if that is a good option I’m wondering how much and/or what kind of air supply to use?

[Jack.of.all.aquariums]

I had a small pond on my deck that I ran with just a regular air pump. Pump was inside in the utility room and I drilled a tiny hole through the wall and ran the airline out to the pond.

If I was going to do it without drilling a hole in the house I would probably pick up 2 of the cheaper usb airpumps and then DIY some kind of  weather proof box that would allow the power in, air line to go out, and some air to get in that would also block water.

[freemoney]

Like Jack said you can put your pump in a tote and drill holes for the electric and air lines