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Here are a couple more shots of the snorkle and centipede from different angles.
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From this angle you can see the snorkle sticking out of the bog. It needs about a foot taken off the top so that it will be below the surface of the bog, covered by a few inches of pea gravel.
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After the centiped and snorkle are in place, I attached the 3" hose to the centipede -- you can see it on the far right side. After that, it's time to start putting the rock in place all accross the bottom of the hole and across the centipede. The rock isn't just dumped in, it's all hand placed. The very bottom layer of rocks are placed with about an inch gap between each rock as shown in the rocks that are toward the top of the picture. The next layer of rocks are placed on top of those 1" gaps, forming a little roof over each of the gaps. This creates a series of channels that helps the water distribute evenly through the bog as it comes out the centipede.
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This is a close-up of where the 3" hose is connected to the centipede.
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This is what it looked like with about 1 ton of rock in the bottom of the bog.
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After placing the rock across the bottom of the bog, the pea gravel comes next. This is what it looked like with 1 ton of pea gravel on top of the rock.