Bubbles-Good or Bad?

I have an overflow box and when the tube gets filled w/air, it quits "overflowing". Not a pretty sight! Kas

 

well as the Geat Tangster has so inlightened me the overflow box does just that OVERFLOW everywhere. I Would have to suggest a built in overflow with a drilled tank. I have investigated both ways and the pros of the drilled tank way out weighed the pros of the overflow box system. With my new steup which i hope to get some pics up soon, if the water level gets below the break (a hole in the overflow tube) and the siphon stops, it will begin to work again as soon as the water gets back where it belongs. Much better then an inch or so of sea water on your floor.