digital thermometer and traditional alcohol glass thermometer

[xiaoyuer86]

maybe i tot the reading from digital is more easy to see

[EvolutionZ]

yea true.. i got a friend who bought a very cheapo digitial thermometer.. without his tank using fan and at room temp(30c) his thermometer is showing 27C and i he placed in a mercury thermometer and he got 30.5C.

Originally Posted by EvolutionZ

yea true.. i got a friend who bought a very cheapo digitial thermometer.. without his tank using fan and at room temp(30c) his thermometer is showing 27C and i he placed in a mercury thermometer and he got 30.5C.

hi believe it is a alcohol not a mercury... anyway is dangerous having a mercury thermometer in a fish tank.. later fish get mercury poisoning

[xiaoyuer86]

oh is alcohol.. was wondering whether it is the same as those clinnical thermometer?

[Limsteel]

Originally Posted by bengy

hi believe it is a alcohol not a mercury... anyway is dangerous having a mercury thermometer in a fish tank.. later fish get mercury poisoning

Bro, unless the thermometer broke... Even so the amount of mercury is so little. I hae broken 1 before, the amount that flow out is less than a PIN head (Cloth making pin). Also mercury is not soluble in water. Mercury poisoning only occur when soluble compound of mercury dissolve in water then enter the fish body... OR the fish eat it direct, this will cause fish to flip over very fast.

So no worries at all.

To mention, Digital thermometer look more hightech and more readable so consumers will usually fall for it... Including me My Digital read out with Fan turned ON is 26... super hot day, will hit 31...

anybody see those silver kind for aquarium use. I think those are the mercury

ones.

[Limsteel]

Never seen one mercury type for aquarium. Only
Sticker type Colour Code

Alcohol (red)


Digital + Probe - cheap like few dollars - expensive can be hundreds of $$$ (temp Controller or couple with PH meter


Analogue (Dial and Pointer) type - using 2 metal with different expansion rate

i think i know what im going to do alrdy. im going to one more alcohol traditional

thermometer then put it in my tank and see what it reads. hehehe

My aro broke one mercury type before really difficult remove it completely from tank. I know mercury vapor is poisonous duno any effect when stay in water.

[Limsteel]

Bro, dont worry... there is no vapour in the thermometer the empty space in the thermometer is vacuum. Mercury don't vapourise easily.

Why difficult? I have play around with mercury in my secondary school science lab (Secretly). Quite easy to separate from water...

Unless the mercury got sucked into the filter or got sucked into a power head and beat up into micro size (Your fish will likely die when it ingest the floating Hg). then just change 100% water. Or you have gravel then headache,