Inside diameter at bottom

Do not use pumps on an extension cord

36 watt UV-C bulb is enclosed inside of a divider that slips in the place of the PVC divider

No one should be in the water while equipment is operating or plugged in

EasyPro Brass Frothy Nozzle - 3" FPT Inlet floating decorative fountain Inside diameter at bottomEasyPro Brass Frothy Nozzle 3" FPT Inlet The FN3 Frothy Nozzle 3" is a widely used nozzle that offers a striking spray effect. It produces a thick, foaming geyser, creating an eye catching column of foam. Multiple nozzles may be set up at different heights for an impressive visual display. This popular nozzle has become the go to choice for many looking to make a statement with their water feature. With its guaranteed reliability, the FN3 Frothy