Go Back   Aquarium Advice - Aquarium Forum Community > Saltwater and Reef > Saltwater Reef Aquaria
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 10-31-2013, 12:18 AM   #1
Aquarium Advice Apprentice
Tbone112219's Avatar
Join Date: Mar 2013
Location: Orange, CA
Posts: 37
Canister exterior filter

Looking for input on if it's good or bad to use an exterior canister filter on a 55 gallon tank?

Tbone112219 is offline   Reply With Quote
Old 10-31-2013, 07:55 AM   #2
Aquarium Advice Addict
Rutrag's Avatar
Join Date: Jul 2011
Location: Richmond, VA
Posts: 1,133
In a FOWLR, it would likely be fine.

In a reef, unless you are very zealous with regular (probably weekly) cleaning, it's generally not a good idea. Canister filters are so good at mechanical filtration that they trap detritus and end up many times causing high nitrates.

It is a violation of federal law to use this product in a manner inconsistent with its labelling.
Rutrag is offline   Reply With Quote
Old 10-31-2013, 09:23 AM   #3
Aquarium Advice Addict
Phranque's Avatar

POTM Champion
Join Date: Sep 2011
Location: Miamisburg, OH
Posts: 1,443
+1. Since this is in the Reef Aquaria section, I'm assuming this isn't for a FOWLR.

When a canister filter traps solids, the water flow is still moving across them, and as they decay, it contribute to the nitrates & phosphates in the system. There are healthy systems with canisters, but you must be very diligent in your maintenance routine & clean them on a regular basis without fail.

A much better option is a sump with a filter sock, a good quality skimmer, and a refugium. The filter sock catches course detritus the same as a canister, but it's MUCH easier to change out a filter sock every couple/few days rather than repeatedly having to tear apart a canister. A skimmer filters out much finer particulates and deposits them into a collection cup, thus isolating them away from the water column, and a refugium with some macro algae help consume excess nutrients to prevent algae in your DT.

If you can't do a sump, IMO your best option is a good HOB skimmer & regular pwc's, but you are at "that" size where a sump begins to almost become a necessity for a healthy system.
Wanna calculate the cost of that new reef tank?? Take your worst nightmare, double it, and you're halfway there.
Phranque is offline   Reply With Quote

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

» Photo Contest Winners

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 12:37 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.