Utah Reefs Homepage
  New Posts New Posts RSS Feed - overflow questions
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

overflow questions
 Post Reply Post Reply
Author
  Topic Search Topic Search  Topic Options Topic Options
Crazy Tarzan View Drop Down
Guest
Guest
Avatar

Joined: September 12 2003
Location: Riverton, WY
Status: Offline
Points: 1681 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Crazy Tarzan Quote  Post ReplyReply Direct Link To This Post Topic: overflow questions
    Posted: December 03 2003 at 12:27pm

I have figured out how I want the rear system of my overflow box to work, however I am still having problems determining some things.  One, how do I determine the level of the water in the fish tank?  Two, how do I make sure that I don't break the vacuum by pulling too much water out (vs the return flow) into the back overflow box?  What size siphon pipe should I use to achieve about 200, or a little more, gph? Are there any formulas I should use? Thanks,

Nate
Back to Top
jfinch View Drop Down
Guest
Guest
Avatar

Joined: March 06 2003
Location: Pleasant Grove
Status: Offline
Points: 7067 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jfinch Quote  Post ReplyReply Direct Link To This Post Posted: December 03 2003 at 12:46pm

The level of water in the fish tank will be at whatever elevation the inlet weir (overflow) on the internal box.  The secondary weir in the external box needs to be an inch or so lower then the inlet weir.  Both ends of the syphon need to be lower then the secondary weir.  For 200 gph, (total guess on my part) I'd try a 3/4 inch tube.  If it can't keep up move to a bigger tube, if air bubbles get trapped in the top of the syphon tube then move to a smaller tube.  If you have both problems then lower the secondary weir.

A picture is worth a thousand words, but I can't draw here.
Jon

What I've been doing...
Back to Top
Mark Peterson View Drop Down
Paid Member
Paid Member
Avatar

Joined: June 19 2002
Location: Murray
Status: Offline
Points: 21436 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Mark Peterson Quote  Post ReplyReply Direct Link To This Post Posted: December 06 2003 at 10:11am
Have you read my article on the Simple Overflow? You need to email me and ask for it. It answers these questions.
Nothing less than one inch pipe/tubing should be used because it needs to flow as freely as possible. Air bubbles are not that hard to deal with when you know how.
Reefkeeping Tips, & quick, easy setup tricks:
www.utahreefs.com/forum/forum_posts.asp?TID=9244
Pay it forward - become a paid WMAS member
Back to Top
 Post Reply Post Reply
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.03
Copyright ©2001-2018 Web Wiz Ltd.

This page was generated in 0.172 seconds.