How HOT is too HOT?

[JGT]

Conversely, have you verified the temp with another device? Maybe temp probe is kaplooie.

 

[Jedi1199]

The heating system is offline. I am leaning towards the return pump.

If it IS a return pump issue, then your pump should be uncomfortably warm to the touch.

To increase tank temp 4* over 2 days would require a VERY hot spot on something as small as a return pump.

 

[Jedi1199]

Conversely, have you verified the temp with another device? Maybe temp probe is kaplooie.

Good point!! I use my kitchen digital thermometer to verify temps.

 

[Sean Clark]

If it IS a return pump issue, then your pump should be uncomfortably warm to the touch.

To increase tank temp 4* over 2 days would require a VERY hot spot on something as small as a return pump.

Well my return pump is pretty big. I just felt the body of it and it feels like it is the same temp as the water.

 

[Tamberav]

For softies and LPS 85-86 would not bother me... I ran one of my first nanos mid 80's every summer as I was in college in a cheap apartment that didn't have central air.

At my current residence, my central went out when I was out of town during a hot spell... my tank got to 92-93 degrees

I can say I had no fish loss, no soft coral loss, lost 2? LPS and almost all SPS. Overall I was surprised the tank was mostly just fine.

 

[thatmanMIKEson]

Id turn that u.v and skimmer off to help, like you said

 

[Sean Clark]

Conversely, have you verified the temp with another device? Maybe temp probe is kaplooie.

Good call. I did this the other day on another post about temp accuracy. I was told that kitchen thermometers do not need to be precise so I should trust the Apex. I just took this pic a moment ago.

 

[Sean Clark]

Id turn that u.v and skimmer off to help, like you said

The uv bulb is off I am going to turn the pump off too now.

 

[Sean Clark]

So I am possibly freaking out based on false info. Like that has never happened before. Apex still says 82.

 

[JGT]

Good call. I did this the other day on another post about temp accuracy. I was told that kitchen thermometers do not need to be precise so I should trust the Apex. I just took this pic a moment ago.

So your water temp is OK?? I’m confused.

 

[Sean Clark]

For softies and LPS 85-86 would not bother me... I ran one of my first nanos mid 80's every summer as I was in college in a cheap apartment that didn't have central air.

At my current residence, my central went out when I was out of town during a hot spell... my tank got to 92-93 degrees

I can say I had no fish loss, no soft coral loss, lost 2? LPS and almost all SPS. Overall I was surprised the tank was mostly just fine.

I feel like I am seeing my tangs up at the surface more skimming the waterline. I see that as them lacking o2 but I am also a hypochondriac.

 

[Jedi1199]

Well my return pump is pretty big. I just felt the body of it and it feels like it is the same temp as the water.

I doubt that is the issue then. It would require a VERY large heat source to overcome both natural equilibrium and push your tank to a temp 4 or 5 degrees above what the heaters are set at.

 

[Sean Clark]

So your water temp is OK?? I’m confused.

So am I. Which do I trust? Apex or kitchen thermometers?

 

[JCM]

Find a mercury based thermometer to test with, rather than digital.

 

[CK00020]

What kind of return pump are you running?
Do you have like a Hanna salinity checker with temp readout, I wouldn’t trust the kitchen stuff

 

[JGT]

So am I. Which do I trust? Apex or kitchen thermometers?

2 kitchen thermometers from the looks of things.

 

[Sean Clark]

2 kitchen thermometers from the looks of things.

Valid point. Split the difference?

 

[Jedi1199]

I would trust the kitchen ones.

Simple calibration test. Fill a glass with ice water. Temp should read 32 or 33. Then boil some water temp should read 212 degrees at sea level.

 

[Sean Clark]

What kind of return pump are you running?
Do you have like a Hanna salinity checker with temp readout, I wouldn’t trust the kitchen stuff

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[JGT]

Valid point. Split the difference?

There’s a half a degree diff between them so pretty close. Where the Apex is saying it’s 4 degrees hotter. That’s a pretty big diff. I’d go with the kitchen ones.