It would be alot less hassle in the long run (and much more aesthetically pleasing) to just use a toilet float connected to some icemaker watersupply line. Look at my gallery for some pics of the one I set up. Cost about $15 total, and it definitely makes water changes alot easier. Just connect the water supply to the closest cold-water supply line in your house (use a t-connection to hook it up between the chrome valve, and the sink/toilet/etc). The entire valve setup sits inside the tank, and is about 3-4" in diameter, and about 8" long.
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