Very stupid question

[thekinetic]

How do you read a aquarium thermometer, I have a Deep Blue suction cup thermometer and can tell at what increments each hash mark is. Whether it's in one or two, or can it vary?

[Cargo]

Well, think about it. Say in between 72F and 82F, there are four little marks. Lets turn this into an algebra equation:
4x?=10
10/4=2.5
So, 4x2.5=10.
Since there are 10 degrees between 72 and 82, each one must be worth 2.5 degrees because there are four little marks.

[Spazzfish]

I have a nifty little thermometer that has a green area that is 72° to 80° out lined by yellow I got it at Walmart. it makes life a lot easier.

[thekinetic]

I bought mine at some fish store and has a green area between 7o and 80 degrees, but I figured it out it's exactly two degrees per hash mark. So actually my tank was a little warm at 80.

So I turned the temp down and am trying to get it stable at 78 or 79.

[Bombalurina]

80 isn't too warm, it's just about perfect. :)

[Atena]

I have mine at 84... bot now I better go check if I read the temperature correctly... it might actually be 88!