Reef Central Online Community

Home Forum Here you can view your subscribed threads, work with private messages and edit your profile and preferences View New Posts View Today's Posts

Find other members Frequently Asked Questions Search Reefkeeping ...an online magazine for marine aquarists Support our sponsors and mention Reef Central

Go Back   Reef Central Online Community > Special Interest Group (SIG) Forums > Large Reef Tanks
Register Blogs FAQ Calendar Mark Forums Read

Notices

User Tag List

Reply
Thread Tools
Old 10/21/2007, 02:05 PM   #1
SPSFiend
Registered Member
 
SPSFiend's Avatar
 
Join Date: Nov 2005
Location: South Bay / Los Angeles
Posts: 1,018
Need help calculating Sump size

I am beginning planning out an "In wall" tank build and I was wondering if anyone new of a calculation to determine the amount of water that drains from the tank when the return in off?

I am looking to setup a 360 G display tank (96L * 36W * 24H).

I want to be able to do about a 70 G water change without having to shut off the returns.

Thanks for the help!


__________________
Thanks,

Gerry

Current Tank Info: Custom 32x32x24 Rimless. Previous tanks: 180G Reef and 120G Reef
SPSFiend is offline   Reply With Quote
Old 10/21/2007, 03:07 PM   #2
Elliott
Registered Member
 
Join Date: Dec 2001
Location: Scottsdale, AZ
Posts: 3,850
http://reefcentral.com/calc/sump.php


__________________
Rodney Dangerfield - "I worked in a pet store and people would ask how big I would get."

TOTM, March 2015

Current Tank Info: tank video: https://www.youtube.com/watch?v=va1dI7mdnGU ,900g in wall mixed reef, another 500g sumps, 19 AI Sol LED's, 2 CL's w/VFD's controlled pumps to 24 eductors, 2 Tunze WB's, 2 Barr 5220's and RK2 25PE and BK500, etc
Elliott is offline   Reply With Quote
Old 10/21/2007, 05:53 PM   #3
Fish'InMN
Premium Member
 
Join Date: Dec 2005
Location: MN
Posts: 398
Or if you're not always at the computer, all dimensions in inches...

Volume (gallons) = Length * Width * Height / 231

As for the water change idea, why not have a bare 75 gallon tank plumbed in to your return manifold (assuming you're doing this) that is just extra water volume. When you want to do a water change, valve off the 75g tank, drain it, fill with SW, valve on, done. There are numerous folks who have done this here, though I cannot give you any specific threads/people.

Cheers,
Marty


Fish'InMN is offline   Reply With Quote
Old 10/21/2007, 06:12 PM   #4
Elliott
Registered Member
 
Join Date: Dec 2001
Location: Scottsdale, AZ
Posts: 3,850
As for the water change idea, why not have a bare 75 gallon tank plumbed in to your return manifold (assuming you're doing this) that is just extra water volume. When you want to do a water change, valve off the 75g tank, drain it, fill with SW, valve on, done. There are numerous folks who have done this here, though I cannot give you any specific threads/people.

that's exactly the way I do it, very simple and works great


__________________
Rodney Dangerfield - "I worked in a pet store and people would ask how big I would get."

TOTM, March 2015

Current Tank Info: tank video: https://www.youtube.com/watch?v=va1dI7mdnGU ,900g in wall mixed reef, another 500g sumps, 19 AI Sol LED's, 2 CL's w/VFD's controlled pumps to 24 eductors, 2 Tunze WB's, 2 Barr 5220's and RK2 25PE and BK500, etc
Elliott is offline   Reply With Quote
Old 10/21/2007, 08:38 PM   #5
SPSFiend
Registered Member
 
SPSFiend's Avatar
 
Join Date: Nov 2005
Location: South Bay / Los Angeles
Posts: 1,018
Thanks everyone!

If I end up having enough room for an extra 75G tank I will definitely do that as it sounds like an easy way to do water changes!


__________________
Thanks,

Gerry

Current Tank Info: Custom 32x32x24 Rimless. Previous tanks: 180G Reef and 120G Reef
SPSFiend is offline   Reply With Quote
Old 10/22/2007, 05:22 AM   #6
Thinslis
Registered Member
 
Join Date: Dec 2006
Location: Madison, Ohio
Posts: 1,658
I wish I had thought of that extra tank idea. I used a 55g tank for my sump and can't do a 10g water change with out shutting pumps off =(

I supose I could still do it but it would be as clean as drilling the sump would have been.


__________________
-B

Current Tank Info: 40g breeder, ER-RS80, MP40w, 250w + 2xT5
Thinslis is offline   Reply With Quote
Old 10/22/2007, 07:23 AM   #7
Elliott
Registered Member
 
Join Date: Dec 2001
Location: Scottsdale, AZ
Posts: 3,850
Thinslis: you can still drain the sump, install bulkhead and refill


__________________
Rodney Dangerfield - "I worked in a pet store and people would ask how big I would get."

TOTM, March 2015

Current Tank Info: tank video: https://www.youtube.com/watch?v=va1dI7mdnGU ,900g in wall mixed reef, another 500g sumps, 19 AI Sol LED's, 2 CL's w/VFD's controlled pumps to 24 eductors, 2 Tunze WB's, 2 Barr 5220's and RK2 25PE and BK500, etc
Elliott is offline   Reply With Quote
Reply

Thread Tools

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 On

Forum Jump


All times are GMT -6. The time now is 02:01 PM.


TapaTalk Enabled

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2021 Axivo Inc.
Use of this web site is subject to the terms and conditions described in the user agreement.
Reef CentralTM Reef Central, LLC. Copyright 1999-2014
User Alert System provided by Advanced User Tagging v3.3.0 (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.