hydrometers?

does anyone know a place to get hydrometers with out shipping? (places likke target,wallmart, places like that) thnaks

Hydrometers are used with salt water tanks, do you mean a hygrometer? Hygrometers are sold at walmart near the outside thermometers.

will they work for 10g tanks to mesure the humidy?

no reason why they shouldn't. You can also get them at most all pet stores as well.

any at the home depot?

Yes, Home Depot should have a nice selection of hygrometers.

And if you cant find them in any of the places that these nice people have mentioned, then they are a sure find at an expo if any are coming up around you :) good luck