then i used scrap egg crate to make a kind of ledge for theinside of the PVC pipe to catch on so the shelf top fits in place but is still removable when pulled up.
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here it is as basic as it gets so far.
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and a pic of it in the tank.
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and here from the top.i cant wait to fill this up.i figure when it comes time to get under i can move the rack to the right of the tank while accesing the underneath or simply use a rubbermaid tuperware with tank water and put the whole shelf in there.
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