Algae on thermometer string?

[JimMarshall]

Is there any way to prevent algae from growing on the string that holds my thermometer? It only occurs right at/around the waterline.

 

[Mike1162]

Good question, I also get that. I wonder if the string was in a loop if we could just rotate it once a day. I'll go try it.

 

[JamesW]

The cheap algaecide based on Alkyl Dimethyl Benzyl Ammonium Chloride would probably work. Just dip the string in the solution to saturate it periodically. Don't pour any directly in the pool as it will create foam. Make sure that the algaecide does not contain copper.

Maybe make a solution of boric acid and saturate the string in that.

 

[kellyfair]

I cut the string off!

 

[johnpkaiser]

I cut the string off!

Same here... I just cut it off and let it float around.