i thinn the 180s are built like koles i just took off my broken piece of glass and found that it too sits on the bottom pane.. not sure why they did this with 180's but thats what caused me to make a measurment mistake of 1/2 inch.oops but i too will be doing plywood then foam then tank.
Last edited by lockrookie; 03-12-2012 at 10:51 PM.
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