I have a couple thosand dollars worth of koi pond filter equipment I will sell for cheap cheap.
I have 2 pumps that I have routed into 4 inch PVC. They are beasts. The guy I bought them from said he paid $550 each.
I have a big skimmer, and a waterfall filter box. Waterfall filter box has an inlet on the left and right sides. the pumps fit in the skimmer. The skimmer has a net to catch all the leaves and a prefilter. I have filter media for the big big waterfall box as well. I have a 22,000 gallon pond that this worked just fine in. I used to breed and raise koi. Largest one I had was a 32" Butterfly koi all White Gin Rin. If you have any questions about them LMK.
Some of he equipment came from Waterscapes in Lake Ann that is just outside of Traverse City. If you have never visited them, they have a property set up with multiple waterscaped ponds. One has a gazebo on an island and you can feed koi from by hand that will even nibble on your fingers. These are monster koi. They sell koi in the spring time too. They told me that they don't even make the waterfall boxes as big as the one I have anymore

. Everything works perfect. My mom is moving to Texas so I will be pulling the stuff this spring. You are welcome to All the 4" PVC ect- which is a lot, both pumps, the waterfall box, the skimmer, and all the filter media I have to go with it. Will also give anything else I can find that we used for the pond. Have cover nets ect. If you want to salvage any of the liner as it is the super thick stuff, You are welcome to that as well. Spent $800 on it. Weighed 850 lbs when I had it shipped. Great stuff.
$500 firm.