[HenryC]

The new pond will be ~12,000 gallons, 10’ wide by 22’ long and 8’ deep. It will have 3 bottom drains. One bottom drain will gravity feed to the current pond's vortexes (1 with Answer followed by another with fluid bed Kaldnes). The other 2 bottom drains will flow to 2 Nexus 300 filters. I originally was going to use Answers in those as well, but Carl Forss talked me into trying out the EAzy. Can't argue too much when the dealer believes the cheaper option is better. Carl Forss and his team will do the construction. They will saw out the 6" thick gunite pond and dig down deeper and larger. The pond walls will be concrete block then plastered smooth. The pond will be sprayed with black polyurea.

There will be 2 skimmers that will feed an Aquadyne bead filter. A mid-level pickup will feed a bakki shower. The bakki shower will not be next to the pond so two 4" pipes will gravity feed the water back to the pond.

My original design used the Rhino II diffuser bottom drains. Since the pond will be in a swimming pool enclosure, I have no concern about leaves in the pond. Carl presented a new option that you can only use on an enclosed pond like this. The pond will have 3 custom made bottom drains that have no projections into the pond. Even the mid-level pickup is custom so that it provides no projections for the Koi to flash on. The entire inside of the pond will be completely smooth providing nothing for the Koi to scrape against. Below are a few design drawings of the pond and filter pit area: