Be Creative: Floating Pool Thermometer

[aylad]

Ummm..I'd skip the pennies and the bolt. Mine sinks by itself

Welcome to the forum!

[Watermom]

Some pool thermometers have a cap on one end to make it float, but that cap can usually be pulled off so that it sinks.

[Spensar]

Bit of monofiliment line, or a leader, and a bell sinker attached to the end.

[Watermom]

A good idea except aren't those sinkers metal?

[CleBeavis]

The plastic el-cheapo one I had used to float unless you held it underwater until it filled with water; whatever genius that designed it only left a small hole at the TOP to let water in. I just drilled a hole in the bottom of the case and it fills and sinks quite nicely now.

[Spensar]

A good idea except aren't those sinkers metal?

Lead actually. Just being a bit tongue in cheek!