The picture is indeed my indoor pond in my living room. I had it built about 20 years ago. It is 4 feet deep with about 3000 gallons of water including a multi chambers filter. The filter medium are mats and honeycombs from Japan with two big bags of oyster shells. I used to be a member of Canada Koi Club but no longer is. It is nice to talk to our fellow Canadians. I would like to say hello to all the koi keepers in Eastern Canada.
Regards,
Derrick