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Re:hotsie totsie

I have seen it happen where a concentration of heat on a thin glass
panel, and a an uneven stress, caused by lifting or bending, can
promote a break.  Usually such a break will occur at a point where a
hairline crack has been been started somewhere along the edge of the
glass.  The hairline might go unnoticed for a long time until the right
combination of uneven heating and weight is applied.

But generally speaking, the heat of high wattage lamps, whatever the
type, is not sufficient to cause a break.

If the glass is replaced on the same tank with the same set up, the
break is unlikely to recur.

Scott H.

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