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BranClanFarm, Broadwell Hill
Total Likes: 3
Original Post (Thread Starter)
by BranClanFarm
Hey everyone, I am about to renovate my 1/8th acre pond to be a 2/3rd acre pond. I got with a local biologist, and he recommended 3 bluegill spawning areas in 1-3 ft depths. I was planning on making them about 10' x 10' each (at 12" pea gravel depth), maybe a little bigger if I only go 8" or so deep with the pea gravel. Basically, I have one truckload to work with, which is about 11-12 cu. yards, or 300 sq. ft. at 12" depth.

Question 1: since the pond will obviously be sloped (roughly a 1:2.5 to 1:3), do I need to specifically make a flat (or "cupped") area for the pea gravel to sit, or can I build a "foundation frame" (like a concrete form for a house foundation), to hold in the gravel?

Question 2: is 8-12" deep good, or should I go thinner or thicker?

Question 3: is three 100 sq. ft. spawning areas good for my 2/3rd acres size, or would I benefit from something different?

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by Bill Cody
Bill Cody
Because your planned gravel spawning areas are relatively small, consider first putting down landscape fabric or weed block material under the gravel. This can help keep the gravel from working its way over time into the clay bottom, and 2. It should allow you to use a littler thinner layer of gravel in the spawning beds because the gravel will tend to not blend into the clay bottom.

Another thing I would do is outline at least one outer perimeter of the bed as a test area with cement blocks or similar retention border to keep the gravel edges from blending or moving into areas of the outer adjacent sediment. Over time expect the gravel areas of each spawning area to become infused with organic sediment. It is how aquatic nature works. An annual raking of these gravel areas helps keep the organic better decayed and cleaner. Nest building activities of fish also help keep subsurface spawning areas in better oxygenated condition with less organic buildup.
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by ewest
I would move the middle bed location to the far end of the pond. Water flow (silting) on top of beds is a large negative. Plus it gives you more diversity in locations (wind and wave action).

See this thread link for BG beds - pics.
Mixed size gravel works best.

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