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 02-14-2003, 10:11 PM   #1
AA Team Emeritus
 
Join Date: Aug 2002
Location: Louisiana
Posts: 7,224
Send a message via Yahoo to Hara
sump return issue

The tank is clear after adding the sand. Now I am noticing something I do not like seeing. The entire tank is full of microbubbles coming from the sump return. What could I do to stop this? I have redirected the flow and that did not help any.
__________________

__________________
Hara is offline   Reply With Quote
Old 02-15-2003, 03:12 PM   #2
AA Team Emeritus
 
Join Date: Oct 2002
Location: Chatsworth, GA
Posts: 4,071
Send a message via Yahoo to loganj
Usually, this happens because the sump doesn't have enough water in it...I'm sure you have enough in there though. Can you give more details about exactly how it's plumbed...location of any valves, ect... Sounds like either the pump is pulling some air in somewhere or something in the line is creating cavitation resulting in all the bubbles.
Logan J
__________________

__________________
Life is not measured by the number of breaths we take, but by the moments that take our breath away.
Logan J
loganj is offline   Reply With Quote
Old 02-15-2003, 03:20 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
I had an issue with cavitation from my return pump when I installed my sump the first time.

This was a result of the pump pushing more water out than what the pump was pulling in. The result was an air pocket within the pump itself.

Is their a direct line from your sump to your pump? Is there a bend or anything like that?
__________________
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 02-15-2003, 05:43 PM   #4
AA Team Emeritus
 
Join Date: May 2002
Location: Fort Collins, Colorado
Posts: 1,022
Send a message via AIM to Anemoneman Send a message via Yahoo to Anemoneman
A stubborn air pocket in the pump may be causing it, time will work it out. More likely your pump is pulling bubbles in caused by your return lines. Is the sump baffles to prevent this? Are your return lines submerged? It doesn't take much air for your pump to chop it up and send micro bubbles back to your main tank. This is a common problem in new setups and CAN be fixed.

Mark
__________________
Mark
Anemoneman is offline   Reply With Quote
Old 02-15-2003, 10:30 PM   #5
AA Team Emeritus
 
Join Date: Aug 2002
Location: Louisiana
Posts: 7,224
Send a message via Yahoo to Hara
The line is totally submerged. It is a straight 6 inch shot from sump to pump. The sump is baffled *hehe, so am I *

What does cavitation mean?

No valves have been installed at this time, that will be coming later. The lines are the stock ones that came with the sump with no tight bends anywhere.
__________________
Hara is offline   Reply With Quote
Old 02-15-2003, 10:55 PM   #6
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:
Originally Posted by Hara
What does cavitation mean?
Take a look at the link below. Its a rather technical explnation but I am fairly sure you will understand it.

http://www.mcnallyinstitute.com/01-html/1-3.html


How submerged is it? I ask because with high power pumps it could acutally pull air into the system even if its submerged. Do you see any signs of small cyclones like a sink drain if you fill it full and then pull the plug. Maybe acutally increaseing the water level in the sump would help
__________________
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 02-15-2003, 11:01 PM   #7
AA Team Emeritus
 
Join Date: May 2002
Location: Fort Collins, Colorado
Posts: 1,022
Send a message via AIM to Anemoneman Send a message via Yahoo to Anemoneman
Quote:
The line is totally submerged. It is a straight 6 inch shot from sump to pump.
That's not the line I was talking about. I meant the return from the main tank to the sump. It should enter the sump submerged. Have a look in the sump with a flashlight and look for small bubbles in the area of the pump intake. Although the sump is baffled, it may not be adequate or efficient. It still may take a little customizng to get it right, especially when dealing with high flowrates.

Mark
__________________

__________________
Mark
Anemoneman is offline   Reply With Quote
Reply

Tags
sump

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
Sump return question. Latitude_change DIY Projects 7 04-07-2008 09:54 AM
Return from sump catchndolphn Saltwater & Reef - Getting Started 4 12-10-2006 10:45 PM
sump return help. ttopmustanggt88 DIY Projects 2 03-15-2006 09:44 PM
Return Pump - Hard Plumbing issue fishman General Hardware/Equipment Discussion 4 02-24-2006 06:00 PM
return from sump huey112 General Hardware/Equipment Discussion 6 03-28-2005 02:15 AM







» Photo Contest Winners








Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 07:55 AM.


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