Go Back   Aquarium Advice - Aquarium Forum Community > General Aquarium Forums > General Hardware/Equipment Discussion
Click Here to Login

Join Aquarium Advice Today
Reply
 
Thread Tools Search this Thread Display Modes
Please support our sponsors and let them know you heard about them on AquariumAdvice.com
 
Old 09-25-2006, 05:55 PM   #1
Aquarium Advice Apprentice
 
Join Date: Jan 2006
Location: Columbus Ohio
Posts: 17
Water Pump causing temperature hike?

Hi,

I am helping someone to start up a new 110G acrylic aquarium. I had recently moved a water pump from my home aquarium to this new one (upgraded my pump to a bigger one), and on the new aquarium the water temp jumped from 72 degree to 86 in 1 day. There is not even a heater in the aquarium so we can rule out heater mul-functioning. The pump also felt hot after its been running for a couple hours.

Now the strange thing is that before I moved it, that exact pump had been working in a different (60G) aquarium for years, and I have to put 2 heaters in that aquarium to keep the temp there above 76 degrees. The sump of the old aquarium is also in the basement (as compare to inside the stand), so the pump had a much higher head pressure (15-ft head vs. 4-ft head) than its current setup. If I understand correctly, less head-pressure = less resistant = less amp draw = less heat??

So, anyway, at this point I am kind'a stuck... can anyone think of why the pump all of a sudden runs so much hotter? This is the exact pump in question:

http://www.marinedepot.com/md_viewIt...product=CP7111

Thanks!!



Wallace
__________________

__________________
Wallace is offline   Reply With Quote
Old 09-26-2006, 08:58 PM   #2
Aquarium Advice Addict
 
dskidmore's Avatar
 
Join Date: Aug 2005
Location: Genesee Valley
Posts: 2,616
Have you cleaned this pump lately?

How cold is your basement? Could it be your old system just had a lot of heat loss to fight?
__________________

dskidmore is offline   Reply With Quote
Old 09-27-2006, 02:11 PM   #3
Aquarium Advice Addict
 
Join Date: Dec 2003
Location: Nebraska, USA
Posts: 6,703
pumps will heat the water, but that's an awefully large spike. I would look at all other sources too...lighting, warmer than normal room temp, faulty thermometer.
__________________
Former advisor and planted tank geek...life's moved on though.
malkore is offline   Reply With Quote
Old 09-28-2006, 06:57 PM   #4
Aquarium Advice FINatic
 
Join Date: May 2006
Location: Olathe, KS
Posts: 920
Send a message via AIM to JRagg
Abnormally large temperature rises (across the pump) can be a sign of a pump failing, but unless it is making more noise than normal and/or vibrating more than normal I would probably rule that out. I agree to check differences in ambient room temperature, lighting levels, etc.

Did all of the tanks in question have tops on them? Open topped aquariums are generally cooler due to evaporation.

And now for a question for my own ignorance. Is acrylic a better insulator than glass? If so then that could account for some increased temperature.
__________________
10g Heavily planted - 1 mating pair of Apistogramma Cacatuoides "Orangeflash" and a whole lot of MTS
JRagg is offline   Reply With Quote
Old 09-29-2006, 12:40 PM   #5
Aquarium Advice Apprentice
 
Join Date: Jan 2006
Location: Columbus Ohio
Posts: 17
Thanks for all the reply, I think the combination of them may have caused the increase. The basement being cooler and have much better ventilation certainly can explain a lot, plus now that I think about it, the "heated" water (in the old setup) have to travel around 30ft of plastic tubing to reach the tank on first floor, maybe it was able to cooled down during that travel. The old sump also have much more surface area for evaporation.

Also, I called Poseidon and they said these pumps are WATER COOLED (!!!) and that it is normal for it to heat up the water a few degrees. But they said it shouldn't be more then 2-3 degree, and he tell me to install a fan inside the cabinet.

Anyway, we did the following:

1. I opened the pump and cleaned the impeller, there are some nasty gunks over it.
2. We removed the top lids from the tank.

Now the temperature stays around 82 degree with the light on (it was 86 with the lights off). I could shave another degree if we leave the cabinet's doors open. But regardless, 81-82 degree is still higher then I would like it to be, but I guess it is tolerable for a FO setup?

Oh and we did verified the temperature with 2 different thermometer.

Thanks!!



Wallace
__________________
Wallace is offline   Reply With Quote
Old 09-29-2006, 12:56 PM   #6
Aquarium Advice Addict
 
dskidmore's Avatar
 
Join Date: Aug 2005
Location: Genesee Valley
Posts: 2,616
Quote:
Originally Posted by Wallace
But regardless, 81-82 degree is still higher then I would like it to be, but I guess it is tolerable for a FO setup?
Just make sure there's enough O2. If you've got a skimmer, all will be well.
dskidmore is offline   Reply With Quote
Old 10-01-2006, 05:40 AM   #7
Aquarium Advice Apprentice
 
Join Date: Jan 2006
Location: Columbus Ohio
Posts: 17
Yes there will be a skimmer in about a month (haven't moved it yet), and the tank has very good surface water movement from the return for O2 exchange. We also plan to substantially "underload" the tank with very few fish, so I think we will be OK.

Thanks!



Wallace
__________________
Wallace is offline   Reply With Quote
Old 10-02-2006, 02:31 PM   #8
Aquarium Advice Addict
 
Join Date: Dec 2003
Location: Nebraska, USA
Posts: 6,703
ahh, with the added explaination about 30 feet of hose..yeah, I can totally see that much exposed surface area allowing the water to cool off before hitting the tank/thermometer.
__________________
Former advisor and planted tank geek...life's moved on though.
malkore is offline   Reply With Quote
Old 10-02-2006, 08:41 PM   #9
Aquarium Advice Freak
 
Join Date: Sep 2006
Location: Sumter, SC
Posts: 342
Are you forcing the intake through any 90 degree elbows? Restrictions such as these may raise temperatures as well. The stand should be well ventilated, especially if the skimmer pump will be housed in there as well.
__________________

__________________
Fish do not read books, nor care what we think.
afishyonados is offline   Reply With Quote
Reply

Tags
pump, temperature

Please support our sponsors and let them know you heard about them on AquariumAdvice.com

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Bubbles Causing Cloudy Water? Curious1 Freshwater & Brackish - General Discussion 4 10-25-2009 12:58 PM
whats causing my green water? mr funktastic Freshwater & Brackish - Planted Tanks 1 07-06-2006 10:10 AM
Lighting Causing Temperature Rise tjw Freshwater & Brackish - General Discussion 5 05-19-2006 01:03 PM
Water temperature temperature hyetexa2001 Freshwater & Brackish - General Discussion 3 08-12-2005 11:53 AM
Air Pump causing too much surface agitation Rxblade123 Freshwater & Brackish - General Discussion 7 11-22-2004 10:00 AM







» Photo Contest Winners








Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 05:50 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.