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 11-04-2004, 06:15 PM   #1
Aquarium Advice Activist
 
Join Date: Nov 2003
Location: San Francisco, Ca.
Posts: 165
refugium question

If in a refugium, like the cpr hob fuges, if the pump stops running will the suction of the inlet continue the vacuum and overflow the fuge? Or does it stop the suction?
Im debating getting the hang on back style fuge for a new 20 gal fowlr

Thanks, Brian
__________________

__________________
mrpope is offline   Reply With Quote
Old 11-04-2004, 06:29 PM   #2
Aquarium Advice FINatic
 
Join Date: Aug 2004
Location: Bay Area, CA
Posts: 730
These links might answer your questions. i don't own one.
http://www.cpraquatic.com/support/sup-af_faq.html
http://www.cpraquatic.com/support/su...eshooting.html
__________________

__________________
Paintballs look like bubble gum
14G starphire,150W MH+32W act03,AquaClear 150 HOB filter, 75W EboJager, IceProbe chiller, Remora skimmer, closed loop SCWD mag5, auto toper-offer.
http://img.photobucket.com/albums/v1...lam/banner.jpg
klam is offline   Reply With Quote
Old 11-04-2004, 08:41 PM   #3
AA Team Emeritus
 
Join Date: May 2002
Location: Virginia
Posts: 2,256
Send a message via ICQ to fishfreek Send a message via AIM to fishfreek Send a message via MSN to fishfreek Send a message via Yahoo to fishfreek
The flow should stop. Thats if the water level in the tank and the water level in the hang on fuge can come to an equilbrium level with out causing the hang on fuge to overfill.
__________________
Remember dont tap the glass, your fish will think you're an idiot -Anonymous mother

Check out our articles area. 30+ Aquatic articles for your enjoyment
Are you in or around the Shenandoah Valley area? If so click here to join our regional forum.
fishfreek is offline   Reply With Quote
Old 11-04-2004, 09:04 PM   #4
Aquarium Advice Activist
 
Join Date: Nov 2003
Location: San Francisco, Ca.
Posts: 165
Ok I was wrong this is how they work, the pump draws water into the fuge then siphoning gets it out. So heres a new question. If the powerhead stops working, will the water in the fuge drain out of the non operating powerhead? It seems that the water would drain out of the outlet, but that is in a seperate chamber and only that little bit would escape, but if the powerhead stoped working, would the fuge just drain into my tank until the fuge is almost empty?

Thanks , Brian
__________________
40 gal reef
mrpope is offline   Reply With Quote
Old 11-04-2004, 09:10 PM   #5
AA Team Emeritus
 
Join Date: May 2002
Location: Virginia
Posts: 2,256
Send a message via ICQ to fishfreek Send a message via AIM to fishfreek Send a message via MSN to fishfreek Send a message via Yahoo to fishfreek
This is from the FAQ linked above.

Quote:
Q. Why does the siphon break when the water level in the tank drops?

A. The outlet needs to remain completely submerged under the surface of the water in order to maintain the siphon. If the water level of the tank fluxuates, lower the outlet elbow on the AquaFugesm as low as it can go. If the water level drops below the outlet, follow the directions provided with the refugium to restart the siphon.


Above is a graphic from the FAQ aswell. If the pump that feeds the refuge stops then the water level in the fuge would lower till it was equil with the water level in the tank. As you can see above the return styphon will not break unless air enters the return tube and the only way this could happen is if the fuge was so high above the tank that the small return chamber in the fuge emptied or air entered the system on the tank size due to very low water. Nither should happen upon normal operation because water will stop moving once the water level in both systems is level.
__________________
Remember dont tap the glass, your fish will think you're an idiot -Anonymous mother

Check out our articles area. 30+ Aquatic articles for your enjoyment
Are you in or around the Shenandoah Valley area? If so click here to join our regional forum.
fishfreek is offline   Reply With Quote
Old 11-04-2004, 10:00 PM   #6
Aquarium Advice Activist
 
Join Date: Nov 2003
Location: San Francisco, Ca.
Posts: 165
So, youre saying it WILL come out of the inlet. If you look at that graphic there is wall separating the main chamber from the outlet chamber, so that would minimize the amount that drain back into the tank in case the pump stops working, right? But if it flows out of the inlet into the tank as well, then that would be a significant amount of water that would flow back in, especially if Im only using a 20 gallon aquarium. I guess I just dont get it. Maybe once I get the thing Ill shut the pump off and see if my tank overflows - which it probably wont, I just worry about everything.

Thanks, Brian
__________________
40 gal reef
mrpope is offline   Reply With Quote
Old 11-04-2004, 10:49 PM   #7
Aquarium Advice Addict
 
Join Date: May 2004
Location: Peoria, IL
Posts: 1,757
Send a message via MSN to RocketSeason
You will not need to worry about overflow. I have a cpr Bak Pak 2R skimmer which works in the same way. when the power goes out, the water stops pumping and empties through the outlet until water levels are even.
__________________
Hardware: 37 gallon SW tank and stand by Oceanic Systems, Magnum 350 Pro Canister Filter (half carbon), CPR Bak Pak 2R skimmer, Maxijet 1200 Powerhead, RenaCal 150 W heater, Compact fluorescent lights with moonlights. 40 lbs of liverock, 3" sand bed.

Software:2 Tank-Raised Ocellaris Clowns, 1 Purple Firefish, 1 Electric Orange hermit crab, 18 Blue Legged hermit crabs, 8 or so Nassarius snails, Xenia, Blue, green, and Green Striped Mushrooms.

Click here to vote for AquariumAdvice.com: The friendliest, fishiest place on the net!

Central Illinois Marane Aquarist (CIMA) member.
RocketSeason is offline   Reply With Quote
Old 11-05-2004, 09:34 AM   #8
AA Team Emeritus
 
Join Date: May 2002
Location: Virginia
Posts: 2,256
Send a message via ICQ to fishfreek Send a message via AIM to fishfreek Send a message via MSN to fishfreek Send a message via Yahoo to fishfreek
Quote:
water stops pumping and empties through the outlet until water levels are even.
Thats the basis of the syphon principle. Water at different levels will try to find an equilbribum point. If the water level is always higher on one side then it will syphon water to the lower level. Once the water levels becomes equil then the water flow will stop until the water levels change. (ie. the pump starts back up)
__________________
Remember dont tap the glass, your fish will think you're an idiot -Anonymous mother

Check out our articles area. 30+ Aquatic articles for your enjoyment
Are you in or around the Shenandoah Valley area? If so click here to join our regional forum.
fishfreek is offline   Reply With Quote
Old 11-05-2004, 10:00 AM   #9
Aquarium Advice Addict
 
Join Date: Dec 2003
Location: Nebraska, USA
Posts: 6,703
I have a CPR hang on fuge. When you turn it off, it drains thru the outlet. if you drain the tank down further, water will drain through the inlet, which is why the inlet has a valve that you can close during maintenance so your fuge doesn't run too empty.
__________________
Former advisor and planted tank geek...life's moved on though.
malkore is offline   Reply With Quote
Old 11-05-2004, 07:52 PM   #10
Aquarium Advice Activist
 
Join Date: Nov 2003
Location: San Francisco, Ca.
Posts: 165
cool thanks
__________________

__________________
40 gal reef
mrpope is offline   Reply With Quote
Reply

Tags
refugium

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
Refugium question. kgriffith DIY Projects 3 01-21-2009 10:42 AM
refugium question bapski General Hardware/Equipment Discussion 4 03-16-2006 11:52 AM
Refugium question... runway1 Saltwater Reef Aquaria 4 02-26-2005 02:27 PM
Refugium question sdveirs Saltwater Reef Aquaria 1 01-10-2005 08:49 PM
Refugium question... StickyTuba Saltwater Reef Aquaria 1 01-06-2005 05:43 PM







» Photo Contest Winners








Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 10:32 AM.


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