temp question

Snelly40 · 07-17-2008, 02:36 PM

so i got an aqua control junior last night for my birthday, plugged in the temop probe, put it in the tank and it is saying 89 degrees, WOW!
my coralife digital therm is showing 80.1 ?????
whats up?

Snelly40 · 07-17-2008, 02:42 PM

well, i cant get out to get another therm to see which is correct, so i have put ice in a large bowl with some water and am placing both probes inthere and we will see which shows 32 degrees

ab420 · 07-17-2008, 02:45 PM

Neither should read 32 degrees, if the water was at 32 it would be frozen. I would really suggest finding a reliable heater that you can trust before making any adjustments to the temperature in the tank.

Snelly40 · 07-17-2008, 02:47 PM

i thought water with ice in it will show 32...
my coralife one is showing 23!!!!!!!!!!2 which i know is wrong

PEMfish · 07-17-2008, 03:22 PM

It is not made for temps that extrema so not surprised it is off. Try a bowl of luke warm tap what with both thermometers in at the same time. Let them sit for a moment and see if they give the same reading. I'd like to know if its not just a variance in the tank.

Snelly40 · 07-17-2008, 03:25 PM

i have them right next to each other in the tank now, and still different temps. i'll grab a third therm to see whats correct

Snelly40 · 07-17-2008, 03:37 PM

just spoke to neptune who makes the ac jr and they say they calibrate it before its sent out to within +/- .5 degrees

WatchinFish · 07-17-2008, 05:29 PM

return it and tell them to kiss your butt and send you a new one.

Snelly40 · 07-17-2008, 07:04 PM

too late for that, the faulty therm was the coralife one, who knows how long it was bad, but it was 10 DEGREES OFF!!!!!!!
i think this should solve alot of my issues

Mattfish · 07-20-2008, 01:15 AM

Just saw this one - we had a similar problem - and not surprisingly, the AC3 Pro was correct - I had to do the same and speak with Curt at Neptune to find out that they check all probes to +- .5 F.

The other thing to make sure about is the other probes except the Conductivity probe (if you have that) should all be within 6 inches of the temp probe since it acts as the electrical ground for the other probes - pH, ORP (and I believe the DO probe, which we don't have).

The conductivity probe needs to be electrically isolated from the temp probe to function correctly. In our case, I built a little acrylic cup to hang on the side of my sump/fuge and have the Phosphate Reactor effluent flowing into it, since it's only saltwater (as opposed to the Calcium Reactor effluent, which is lower pH and higher Alk, and I figured the dofferences might somehow affect either the probe's metering, or the life of the probe).

fatman · 07-20-2008, 06:11 AM

Are you guys sure that is not +/- 0.05 degrees they calibrate to within, as even the cheaper Reef Keeper 2 has a resolution to 0.1 degrees, meaning +/- 0.05 degrees that a customer can calibrate within. A half a degree is pretty poor resolution. I can not imagine that the Reef Keeper people are providing a temperature probe and its circuitry that has ten times better the resolution of the AC Jr. and the AC3 Pro. If so it would make me want to look at the resolution of the readings with Neptunes other probes and circuitry.

Mattfish · 07-20-2008, 12:58 PM

Resolution on the readout is .1F. calibration is .5F

Check with Neptune for more info.

fatman · 07-20-2008, 08:00 PM

Quote:

Originally Posted by Mattfish

Resolution on the readout is .1F. calibration is .5F

Check with Neptune for more info.

Why? They have an instument that will calibrate to 5 times a more accurate temp then they calibrate too. That is strange. Admittedly a finer calibration would not really be to much advantage but if it can be readly done by them thenit should be done.

Mattfish · 07-20-2008, 09:35 PM

Whatever. I was answering your question. When you own the company and pay the bills, you can set the standards for the product..... Until then, they make a good product and those of us that choose to buy it do so.

07-17-2008, 02:36 PM	#1 (permalink)
Snelly40 Golden Moray Join Date: Apr 2006 Location: Charlotte, NC Posts: 2,797 View Gallery Karma Komment	temp question so i got an aqua control junior last night for my birthday, plugged in the temop probe, put it in the tank and it is saying 89 degrees, WOW! my coralife digital therm is showing 80.1 ????? whats up? __________________ Snelly's 90gal Reef-O-Rama *Member-"Crabs Are Evil" Society* In Hoc Signo Vinces

07-17-2008, 02:42 PM	#2 (permalink)
Snelly40 Golden Moray Join Date: Apr 2006 Location: Charlotte, NC Posts: 2,797 View Gallery Karma Komment	Re: temp question well, i cant get out to get another therm to see which is correct, so i have put ice in a large bowl with some water and am placing both probes inthere and we will see which shows 32 degrees __________________ Snelly's 90gal Reef-O-Rama *Member-"Crabs Are Evil" Society* In Hoc Signo Vinces

07-17-2008, 02:45 PM	#3 (permalink)
ab420 Tunicate Join Date: Jun 2008 Posts: 10 View Gallery Karma Komment	Re: temp question Neither should read 32 degrees, if the water was at 32 it would be frozen. I would really suggest finding a reliable heater that you can trust before making any adjustments to the temperature in the tank. __________________ Reef Aquarium Maintenance for VA and D.C.

07-17-2008, 02:47 PM	#4 (permalink)
Snelly40 Golden Moray Join Date: Apr 2006 Location: Charlotte, NC Posts: 2,797 View Gallery Karma Komment	Re: temp question i thought water with ice in it will show 32... my coralife one is showing 23!!!!!!!!!!2 which i know is wrong __________________ Snelly's 90gal Reef-O-Rama *Member-"Crabs Are Evil" Society* In Hoc Signo Vinces

07-17-2008, 03:22 PM	#5 (permalink)
PEMfish Golden Moray Join Date: Oct 2007 Location: Kane Co. Il. Posts: 2,370 View Gallery Karma Komment Add yours!	Re: temp question It is not made for temps that extrema so not surprised it is off. Try a bowl of luke warm tap what with both thermometers in at the same time. Let them sit for a moment and see if they give the same reading. I'd like to know if its not just a variance in the tank. __________________ Paul `EM My new 48" reef tank; http://www.reefsanctuary.com/forums/...-opciones.html My new planted; http://www.reefsanctuary.com/forums/...-planted.html# Make it idiot-proof and someone will make a better idiot. I'll make the whole damn world jealous if given the money to do so. Don't make mistakes and learn from them, read and learn how to avoid mistakes. a)Fix the damn problem b)live with it -But absolutely no b*tching

07-17-2008, 03:25 PM	#6 (permalink)
Snelly40 Golden Moray Join Date: Apr 2006 Location: Charlotte, NC Posts: 2,797 View Gallery Karma Komment	Re: temp question i have them right next to each other in the tank now, and still different temps. i'll grab a third therm to see whats correct __________________ Snelly's 90gal Reef-O-Rama *Member-"Crabs Are Evil" Society* In Hoc Signo Vinces

07-17-2008, 03:37 PM	#7 (permalink)
Snelly40 Golden Moray Join Date: Apr 2006 Location: Charlotte, NC Posts: 2,797 View Gallery Karma Komment	Re: temp question just spoke to neptune who makes the ac jr and they say they calibrate it before its sent out to within +/- .5 degrees __________________ Snelly's 90gal Reef-O-Rama *Member-"Crabs Are Evil" Society* In Hoc Signo Vinces

07-17-2008, 05:29 PM	#8 (permalink)
WatchinFish Sea Pen Join Date: May 2008 Posts: 312 View Gallery Karma Komment	Re: temp question return it and tell them to kiss your butt and send you a new one. __________________ 135 gallon glass tank with center overflow 60 gallon DIY glass sump Current USA Outer Orbit Fixture, 3x250W HQI Metal Halide & 8X39W T5s, 72 inch 1200 gph return pump 2-300w submersible heaters 180 pounds of liverock 120 pounds of livesand Tank still in progress. next comes the protien skimmer. then i slowley add on the perks such as a chiller. check out my reef chronicles http://www.reefsanctuary.com/forums/...ming-true.html ~WatchinFish~

07-17-2008, 07:04 PM	#9 (permalink)
Snelly40 Golden Moray Join Date: Apr 2006 Location: Charlotte, NC Posts: 2,797 View Gallery Karma Komment	Re: temp question too late for that, the faulty therm was the coralife one, who knows how long it was bad, but it was 10 DEGREES OFF!!!!!!! i think this should solve alot of my issues __________________ Snelly's 90gal Reef-O-Rama *Member-"Crabs Are Evil" Society* In Hoc Signo Vinces

07-20-2008, 01:15 AM	#10 (permalink)
Mattfish King of all I survey Join Date: Mar 2008 Location: Cupertino, CA Posts: 190 View Gallery Karma Komment Add yours!	Re: temp question Just saw this one - we had a similar problem - and not surprisingly, the AC3 Pro was correct - I had to do the same and speak with Curt at Neptune to find out that they check all probes to +- .5 F. The other thing to make sure about is the other probes except the Conductivity probe (if you have that) should all be within 6 inches of the temp probe since it acts as the electrical ground for the other probes - pH, ORP (and I believe the DO probe, which we don't have). The conductivity probe needs to be electrically isolated from the temp probe to function correctly. In our case, I built a little acrylic cup to hang on the side of my sump/fuge and have the Phosphate Reactor effluent flowing into it, since it's only saltwater (as opposed to the Calcium Reactor effluent, which is lower pH and higher Alk, and I figured the dofferences might somehow affect either the probe's metering, or the life of the probe). __________________ Mike - for the Mattfish Family - Mike, Pum and Matthew the little fish "A billion here, a billion there, pretty soon it's real money." Sen. Sam Rayburn on the 1964 Congressional Budget, or, anyone with a tank. "I can't complain, but sometimes I still do." Joe Walsh on life. "Vote early, vote often." Mayor Wild Bill Thompson of Chicago on elections during the Capone era.

07-20-2008, 06:11 AM	#11 (permalink)
fatman Torch coral Join Date: Jan 2006 Location: Alaska Posts: 534 View Gallery Karma Komment	Re: temp question Are you guys sure that is not +/- 0.05 degrees they calibrate to within, as even the cheaper Reef Keeper 2 has a resolution to 0.1 degrees, meaning +/- 0.05 degrees that a customer can calibrate within. A half a degree is pretty poor resolution. I can not imagine that the Reef Keeper people are providing a temperature probe and its circuitry that has ten times better the resolution of the AC Jr. and the AC3 Pro. If so it would make me want to look at the resolution of the readings with Neptunes other probes and circuitry.

07-20-2008, 12:58 PM	#12 (permalink)
Mattfish King of all I survey Join Date: Mar 2008 Location: Cupertino, CA Posts: 190 View Gallery Karma Komment Add yours!	Re: temp question Resolution on the readout is .1F. calibration is .5F Check with Neptune for more info. __________________ Mike - for the Mattfish Family - Mike, Pum and Matthew the little fish "A billion here, a billion there, pretty soon it's real money." Sen. Sam Rayburn on the 1964 Congressional Budget, or, anyone with a tank. "I can't complain, but sometimes I still do." Joe Walsh on life. "Vote early, vote often." Mayor Wild Bill Thompson of Chicago on elections during the Capone era.

07-20-2008, 09:35 PM	#14 (permalink)
Mattfish King of all I survey Join Date: Mar 2008 Location: Cupertino, CA Posts: 190 View Gallery Karma Komment Add yours!	Re: temp question Whatever. I was answering your question. When you own the company and pay the bills, you can set the standards for the product..... Until then, they make a good product and those of us that choose to buy it do so. __________________ Mike - for the Mattfish Family - Mike, Pum and Matthew the little fish "A billion here, a billion there, pretty soon it's real money." Sen. Sam Rayburn on the 1964 Congressional Budget, or, anyone with a tank. "I can't complain, but sometimes I still do." Joe Walsh on life. "Vote early, vote often." Mayor Wild Bill Thompson of Chicago on elections during the Capone era.

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