This video series captures the process of building a bog filter with materials that should be readily available anywhere. We are using the bog filter to help clean the water and eliminate an existing algae problem.

In the first episode of this series we will walk you through the process of building the box for the bog filter.

Material List
2x10 Lumber - For the sides, ends and bottom
2x2 Lumber - For the cleats
2 1/2” Deck Screws (compatible with your lumber)
Wood Sealer/Preservative

Cut-list
2x10
Sides - 4 pieces 8’-6” long
Ends - 4 pieces 18” long
Bottoms - 11 pieces 15” long

2x2
Long Cleat - 2 pieces 8’-3” long
Short Cleat - 4 pieces 15” long

Keep an eye out for episode 2 where we will go through preparing the plumbing.

We hope you like the video, if you have any questions leave a comment and we would be happy to answer.

Thanks for watching. Keep it fun....

Transcript

We built our box with 2x10s, and we decided on dimensions of 8 foot 6 inches wide by 21 inches deep and 19 inches tall. This utilized the lumber that we had on hand. We chose 8 foot six as that was the distance to the outside edge of two existing posts that we were trying to match up with.

To start with we cut out the sides and we needed four of those at 8 foot six each. You can choose whatever dimensions you want for your bog filter however, keep in mind that if you go too long, you may need intermediate supports to prevent the side walls from bowing out from the weight of the rocks and water.

The ideal size for your bog filter if it’s your only source of filtration should be between 25 to 30% of the surface area of your pond.

Next we’re cutting out the ends and the bottoms. We need four ends at 18 inches and 11 bottoms at 15 inches.

To create the vertical sides we joined two 2 x10s together with pocket screws, we chose this method to eliminate visible fasteners on the outside of the box. We also used 2x2 cleats on the inside. This allowed us to connect the ends and bottoms without any visible screw-heads on the outside. If you don’t have access to Pocket screws, you could also use biscuits and glue to connect the 2x10s together.

To prepare for the plumbing and the installation of the bulkhead fittings, we had to route
out recesses as the throat on the bulkhead feelings were not long enough to go all the way through a 2 x 10. We created a simple jig template to help create those recesses. Once we finished with the router, we cored out the center with a hole-saw. We wanted to keep the recess as tight as possible to the fitting. Because of this a normal wrench wasn’t going to fit so we had to design and 3D print a custom wrench.

We sanded all the exterior surfaces and rounded over the interior cleats and all edges with a quarter round-over bit. This just softens all of the edges and protects the liner from any kind of abrasions when we have the liner installed. We move the box into its final location and screwed the bottom in place. We finished the box off with a coat of wood preservative.

If you enjoyed this video, make sure to subscribe so you won’t miss our next episode where we walk you through the process of preparing the plumbing.

#ponds #nature #koi #water

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