Need a new filter.

TRose

Sophie is addicted to watching the fish.
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I already have an old (5yr) 1600gph filter and comparable 1600gph submersible pump in my 2400 gallon enlarged koi pond. I clean both of them. I replaced inside filters and the UV light in the filter and they are both working really well in my newly enlarged koi pond. I'd like to put in another waterfall therefore I bought a new 2100 GPH submersible pump but since I already have placed the 1.5 inch black corrugated hose in the pond I laid my rock all around it to eventually attach to a filter. Now I can't find a filter that has the adapter opening to a 1.5 inch size. I've returned two outside filter units because I could not find a 1 1/2" iadapter to fit the 1 1/4" openings on these filter units. Does anyone know of a 2100gph outside filter unit that would have a 1 1/2" opening? I cannot undo the stack flagstone and rocks because it's hard to get to some of these rocks. This is a shot of part of my pond.
 

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TRose

Sophie is addicted to watching the fish.
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Last night's shot of the waterfall. I built this pond from scratch by myself but I did employ two young people to dig the three and a half foot deep by 12' x 10' pond. It's my little Oasis I'll soon be getting a palm tree, tropical plants and more flagstone to finish out my patio. I don't think it's bad for a 77 year old lady, do you.
 

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You should be able to find adapters to go from 1-1/2" to 1-1/4" at the big home centers or local hardware stores.

I don't know exactly what type of fittings you need, but they make all kinds of adapters, reducers, etc. for PVC pipes. They have glue in or threaded, which ever you need.

Take what you have with you and find the puzzle pieces you need.
 
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For someone at that state in years i would want something that requires as little maintenance as possible and for my money that is a bog filter. it is very easy to build with anyone who can dig a 12 foot long 3 foot deep pond . all a bog is , is a two foot deep trench with a pvc baffle at the bottom and then buried in pea stone. If those on this forum don't have a bog they are wanting one
 
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