The simple reason is that my digital thermometer is in F, not C. Now I can convert this if I really need to, but I think everyone understands F just fine. And remember, many of us are old and grew up using Imperial measurements. It's also interesting that the people making noise about F over C report their tank volume in gallons rather than litres (Tony!!) :biggrin:
Others use cups of salt per gallon. Is a cup metric?

I mesure in F for the simple reason that the changes in temp are smaller increment's. And my digital thermomoter is in F as well :lol:

Personaly it comes down to the fact that on my thermometer its in F.... I am not gonan bother trying to convert it :biggrin:

The 90 (upstairs....2x250W MH) has been fluctuating from 79 to 82....until the heat set in a few days ago. Yesterday it went up to 90! I immediately turned off the halides, opened the top and the stand doors. Everything appeared to be fine....so far....

The 54 (downstairs....CF system) only went up to 84....

Maybe some of us are just old and learned in F so we keep to it. :wink:

Steve

Most digital thermometers have a switch that tells it to report in F or report in C. All mine do, and I don't have anything special, just your typical $20-$40 digital thermometer available at any LFS..

I dunno ... it just seemed to me, why the heck do I keep them set at F? Why do I care what the F reading is? I don't say "it is 77degrees outside" I say "it is 25degrees outside" ... so why would I think "golly it is 28degrees outside, therefore my tank might hit 90!!" What doesn't make sense to me is the interchangeable units. Then I thought, well, why bother with F at all? The only reason I've ever reported temps in F in recent years, was so that Americans could understand what I'm saying. Why am I being so considerate? Do I think they'd even care that I make this effort for them? If not, then why am I bothering? So that's why I report in C firstly now. And I should add, normally I still do the math and report both numbers, just that this morning I decided I was going to make a stand. It had nothing to do with the fact that I had only one cup of coffee by that point (hey wait I still haven't had my second cup ... what the ... I must be totally losing my grip here .. where DOES the time go), and didn't feel like doing the math. .... no, ok, wait, that's really the whole reason, I admit it ....

Mine had the switch and I set it to F. after over 25 years of keeping fish I know what 78 degrees F is and so on, but I coulden't look at a C reading guage and tell you instantly if it is ok or not. Also like was pointed out already F is more percice using only whole numbers.

Steve

Steve, F doesn't just use whole numbers.

Tony, we'll expect all future numbers to adhere to Canadian metric units. We may not know what you're talking about, but we support your stand. We won't do it, but you should!! :razz:
BTW, it's about 84.2 outside here today!!

:lol:

Well I'm happy to report that after running a small Honeywell Forced Air type fan(cost $25) from Home Depot, it has helped out my reef BIGTIME :exclaim:

It's now 2pm and peak temperature is 94 outside in the shade using a good old mercury thermometer :eek: :mrgreen:

Today I removed the lid on my 4gl sump, setup the fan, and have had it on all day, cooling the water surface of the sump. I am happy to report that after yesterday's high of 86 I am now sitting at a stable 81. That's a whole lot better in my books. As for evaporation, I just brought my sump back up to it's normal level using 1 litre(or a 1000ml :mrgreen: ) of bottled springwater. So I guess that giving my tank a bottle a day is not too bad :biggrin:

Goodluck with the heat everyone!
cheers, Rich