Go Back   Aquarium Advice - Aquarium Forum Community > Saltwater and Reef > Saltwater Reef Aquaria
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 02-17-2011, 03:26 PM   #1
Aquarium Advice Freak
 
SAAVE853's Avatar
 
Join Date: Aug 2010
Location: Miami Beach, FL
Posts: 275
Cooling tank!

I keep my house around 70 in the winter and ever since I changed my lights from VHO to MH and started running my MH more than 4 hours, I noticed my tank is warming to almost 84 F towards the end of MH cycle.

I have a 75gal and as we all now chillers are very expensive so I want to try and use a couple fans to get this under control. From what I've read on here it seems that if you have 100g of water, for every 1 gal that evaporates, the water temp can/will drop aprox 9 degrees.

Questions:
How much truth is there to this statement?
How many fans I would have to use in order to keep my temp at about 80?

Lighting specs:
2-250w MH
4-65w Atinics
__________________

__________________
Live & Let Live!
SAAVE853 is offline   Reply With Quote
Old 02-17-2011, 03:55 PM   #2
Aquarium Advice Addict
 
PrettyFishies's Avatar
 
Join Date: Mar 2003
Location: Durham, NC
Posts: 1,689
Don't know about that statement, but hear that ppl use a clip on fan over their sump to cool/evaporate water. In addition to a couple of fans for the lights.
__________________

__________________
125 gal mixed REEF
PrettyFishies is offline   Reply With Quote
Old 02-17-2011, 04:06 PM   #3
Aquarium Advice Addict
 
thincat's Avatar
 
Join Date: Nov 2008
Posts: 5,330
Here is a picture of the fan I used to use.

I now use a chiller.
__________________
Happy Reefing,
TC
thincat is offline   Reply With Quote
Old 02-17-2011, 04:11 PM   #4
Aquarium Advice Freak
 
SAAVE853's Avatar
 
Join Date: Aug 2010
Location: Miami Beach, FL
Posts: 275
Quote:
Originally Posted by thincat View Post
Here is a picture of the fan I used to use.
I now use a chiller.
What temp was your tank before and after the fan?
__________________
Live & Let Live!
SAAVE853 is offline   Reply With Quote
Old 02-17-2011, 05:35 PM   #5
SW 20 & Over Club
 
ccCapt's Avatar


 
Join Date: Mar 2004
Location: Northeast PA
Posts: 5,362
Send a message via ICQ to ccCapt
Quote:
Originally Posted by SAAVE853 View Post
From what I've read on here it seems that if you have 100g of water, for every 1 gal that evaporates, the water temp can/will drop aprox 9 degrees.

Questions:
How much truth is there to this statement?
How many fans I would have to use in order to keep my temp at about 80?

Lighting specs:
2-250w MH
4-65w Atinics
Quoted from "BeanAnimal":
The evaporation of 1 gallon of water will remove just over 8,000 BTUs from your tank. If you have about 100 gallons of water at ~8.5 pounds per gallon. That is about 850 pounds of water. That means that for every gallon of water evaporated out of your system, the tank temperature will drop by about 9.4 degrees Fahrenheit.
BeanAnimal's Bar and Grill - Home
Reef Central Online Community - View Single Post - DIY Chiller.... PICS

I have 3x175w MH and 2x160 VHO's in my canopy and have 2 fans similar to what Thincat posted in my canopy. They are controlled by a Ranco temp controller. When the tank temp gets to 82 they turn on and when it drops to 80 they turn off. The controller is 2 stage and also controls my heaters so if the temp drops below 78 they turn on and at 80 they turn off.
__________________
/Larry
125g reef
See My Tank Info
Check out The build project
ccCapt is offline   Reply With Quote
Old 02-19-2011, 03:19 PM   #6
Aquarium Advice Addict
 
thincat's Avatar
 
Join Date: Nov 2008
Posts: 5,330
the temp. in my DT use to hit 85 degrees in the summer. I set up my fan simular to ccCapt with a controler. it droped the temp to ~81 degrees. I finally got tired of the evaporation and bought a 1/10hp chiller.
__________________
Happy Reefing,
TC
thincat is offline   Reply With Quote
Old 02-20-2011, 06:01 PM   #7
Aquarium Advice Addict
 
PrettyFishies's Avatar
 
Join Date: Mar 2003
Location: Durham, NC
Posts: 1,689
I would argue that a fan/auto topoff setup would be cheaper than a chiller
__________________
125 gal mixed REEF
PrettyFishies is offline   Reply With Quote
Old 02-21-2011, 03:52 AM   #8
Aquarium Advice Addict
 
thincat's Avatar
 
Join Date: Nov 2008
Posts: 5,330
Quote:
Originally Posted by PrettyFishies View Post
I would argue that a fan/auto topoff setup would be cheaper than a chiller
Everything in life is realitive.lol
__________________
Happy Reefing,
TC
thincat is offline   Reply With Quote
Old 02-21-2011, 07:08 PM   #9
Aquarium Advice Freak
 
SAAVE853's Avatar
 
Join Date: Aug 2010
Location: Miami Beach, FL
Posts: 275
I put in 4 fans...looked all over for them and found them at biglots same exact one you have thincat. They work too well, need to put them on timers now to match my light cycle. They took my tank from swing between 78-83 to a nice 79-81
__________________
Live & Let Live!
SAAVE853 is offline   Reply With Quote
Old 02-21-2011, 11:19 PM   #10
Aquarium Advice Addict
 
cabezon's Avatar
 
Join Date: Dec 2005
Location: Tampa FL
Posts: 1,010
Are you heating the house to 70? Where do you live? Is it dry?

See I live in florida, and the rest of my house is nice, but I walked into my room where the fish tank s, and it was hot and muggy. If you are in a dry area, it might be nice to have all the evap in the air. Me, no way. In the spring, my AC will be fighting the evap and I will be chasing the dragon. More evap means more AC, which means more evap...

If you have more air over the lights themselves you might use less heat in the house.
__________________

__________________
Fishless cycling
cabezon is offline   Reply With Quote
Reply

Tags
tan

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
cooling down tank brian242pa Saltwater Reef Aquaria 3 05-02-2010 07:34 PM
Effect of over cooling on reef tank FearTheDentist Saltwater & Reef - Sick Fish or Coral 8 08-24-2006 10:05 PM
Cooling the tank question runway1 Saltwater Reef Aquaria 7 04-08-2005 01:08 PM
Cooling tank down!! MarkW19 Saltwater Reef Aquaria 15 08-10-2004 06:54 PM
Tank cooling Gauge Saltwater & Reef - Getting Started 16 08-14-2003 12:03 PM







» Photo Contest Winners








Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 04:06 AM.


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