I was thinking i could make a little nice probably 200 gal Pond like midnights (http://img528.imageshack.us/img528/9637/sheepiz5.jpg) But with a glass sheet at the front to see the little fishes. But i don't want to put a liner in there, So i was thinking, Could I paint the inside of the pond with silicon so the wood around it wouldn't rot from the water?

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