Sunil
My pond is 100 feet out the back door at my retirement home, and I'll be there full time by the end of the year. I don't fish alot but have had many marine and freshwater aquariums over the years, but the pond is the best aquarium of all.
Viewing your fish in the pond would be ideal with a picture window, but a bit impractical, I've been using an aqua view UW video system. I ran a stainless cable up from a habitat structure I placed in about 10 feet of water about 15 feet off the shore. I slide the camera down the wire on a simple bracket I made and it's amazing the activity I see. The cameras work on IR sensors so they do very well in low light. It even runs on a battery so you don't need power at the pond either. The cable on the camera is 100 feet long so I may make a few more attachment points so I can move the camera around and see the sights. I'm curious to see what goes on by the aeration discs.


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