The quick answer is no.
You do not state the size of your pond or the size of the UV.
Assuming it is 30 or 55 watt then you can pump large amounts through the unit without fear of damaging the quartz tube.
The failure probably happened during transit from the shop, or was damaged during installation. One has to be very care when removing and replacing the quartz tubes as they do fracture quite easily.
Posted on Oct 6, 2005, 10:51 AM from IP address 86.128.124.147