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

Join Aquarium Advice Today
Thread Tools Search this Thread Display Modes
Please support our sponsors and let them know you heard about them on AquariumAdvice.com
Old 03-10-2007, 11:18 PM   #1
Aquarium Advice Regular
Join Date: Dec 2006
Posts: 65
opinions about overflows

I've read so much about overflow boxes tonight that my head hurts.....what is your opinion on the best one to use? I have a 100g tank, sump is going to be 20 or 25g. What size pump would you all suggest on the return? At the most 5 feet.



ditchdoctor81 is offline   Reply With Quote
Old 03-11-2007, 11:58 AM   #2
Aquarium Advice Activist
Join Date: Apr 2003
Location: Crystal Lake, IL USA
Posts: 179
I use this on my 125gal


I use a MaxiJet900 to keep the air out of the "U-tube"

For the return I use a Mag18 with a ball valve to help with restricting some flow.

I also use a UltraLife float switch to stop overflowing of the tank. If something wierd happens.

After figuring out all the little quirks of the CPR I find it easy to use and reliable.

GL with your research.


125gal Reef
55gal sump
AquaC EV-120 Skimmer
Arctica 1/4hp Chiller
3 x 250W MH 10K and 2 x 165W VHO Actinics
mulron is offline   Reply With Quote
Old 03-11-2007, 05:41 PM   #3
Aquarium Advice FINatic
Join Date: Jan 2007
Location: NJ
Posts: 662
You want to match you return with the flow through rate of your overflow. If your overflow drains 600 gph then you should get a pump to match that. I have dual overflows in a 120 gallon tank that are rated for 600 gph each (total 1200 gph). One of the drain lines from the overflow to the sump has an elbow which probably decreases the flow a little so I doubt if I'm draining 1200 gph total. I also run a Mag 18 which is rated for 1800 gph at 0 head. It does 1375 gph at 4 ft and a little over 1200 gph at 5'. On the return lines there are a couple of 45 elbows and a tee going to the return. I also have a tee to divert some water to my Refugium with a ball valve to control that flow. Overall my flow rate is les.s than 1200 gph but you can see how the pump and the flow rate from the overflow match
chase33 is offline   Reply With Quote
Old 03-12-2007, 11:55 AM   #4
Aquarium Advice Regular
Join Date: Dec 2006
Posts: 65
thanks guys....I'll check them out
ditchdoctor81 is offline   Reply With Quote

flow, overflows

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
overflows lancer22386 General Hardware/Equipment Discussion 13 01-03-2010 04:13 PM
HOB overflows cowpilot Saltwater & Reef - Getting Started 9 10-05-2006 10:09 AM
help on overflows... fishfriends05 Saltwater Reef Aquaria 4 06-15-2004 12:01 AM
Overflows and Plumbing riptide Saltwater Reef Aquaria 4 12-18-2003 10:43 AM
overflows kribbz Saltwater Reef Aquaria 7 04-17-2003 02:17 PM

» Photo Contest Winners

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 10:18 PM.

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