Different Thermometers, Different Readings

[steelhealr]

Hi..I just want to add a comment about the LCD's reading air temp while stuck on an aquarium. Not really much impact. Air is generally an 'insulator' while glass is an excellent conductor of heat. Also, water tends to hold it's temp. How fast does your coffee cool off? Remember that a thermos is glass surrounded by air. The conduction of water temp thru the glass to the LCD will far out weigh any contribution by air under normal house temps. SH

 

[Nevergone815]

Wouldn't that poison the fish if it broke?
I saw on the news a family getting charged thousdands of pounds to have their kitchen decontaminated due to mercury all over their kitchen floor after one of them dropped it.

I have a digital, and a mercury one, just to be safe.

No mercury in there, the red stuff in the bulb is alcohol, not mercury and luckily Martha didn't break the bulb anyway, just the outer casing containing the bearing weights.

i know this is way late lol. but they stopped using mercury thermometers years ago because of the toxicity of them. like SirMinion said, they use alcohol because it is more safe (well to humans, i don't think so much to fish, though it's probably less toxic than mercury is.).

 

[LiveLifeGoJump]

Wouldn't that poison the fish if it broke?
I saw on the news a family getting charged thousdands of pounds to have their kitchen decontaminated due to mercury all over their kitchen floor after one of them dropped it.

I have a digital, and a mercury one, just to be safe.

Hey,

When I was at school mercury wasn't poisonous , well, by the way the teachers let us play with it you would think it wasn't . He would pour some on the bench and we would be fascinated by how it rolled around the bench or our hands. We would just scrape it off the bench back into the bottle when we were finished. He often wondered why there was always less in the bottle afterwards. I think it had something to do with us filling our pen tops with it so we could take it home.

I can't remember anyone putting some in their mouths but we never washed our hands after and the bench got a guick wipe with a cloth. No one came to any harm but schools now don't do that sort of thing because of the posible dangers they now known about.


To Synirr

Your house 78 degrees? I sweat buckets when the house is more than 65 degrees, I'd melt if it were above 70!

 

[celaeno]

do the internal floating thermometers really break that easily? if so, would the alcohol be harmful to the fish if it leaked out?

i have my heater set to 82F for faster fry growth but the top fin stick-on thermometer only reads 75F.