Ryan your structure looks good. Be sure to weight it good enough to get it to sink. Also be aware that floatie things tend to turn over and not sink in the manner you wish. Keep that in mind as you weight it.
I personally would tie at least four concrete blocks to the [/u]underside[u] of the bottom pallet. Why? One to help it sink. Two to help make sure the bottom stays the bottom, Three, to set it up off the bottom to make the structure more useful where fish can swim under. Remember, anything on the bottom will tend to sink in at least a ways and silt up around it. Small stuff on the bottom tends to just get covered up. The blocks will help keep it up off the bottom. Heavy wire or giant zip ties like the ones used to secure heating ducting work well. Giant zip ties can be bought at heating/airco commercial places and are surprisingly cheap if bought by the bag full.
Eventually the wood will water log and sink. But not for a year or two.
Last edited by snrub; 05/27/16 11:46 AM.
