Go Back   Aquarium Advice - Aquarium Forum Community > Saltwater and Reef > Saltwater & Reef - Getting Started
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 10-28-2012, 06:36 PM   #1
Dividing by 0
Community Admin
fort384's Avatar

POTM Champion
Join Date: Nov 2008
Location: Illinois
Posts: 13,924
Let's talk about water change frequency

For the past 8 months of having my reef tank setup, I have been doing a 10-15% PWC once a week on my tank. This was mostly to keep Ca and Alk up as I wasn't dosing.

Now I have added a 2 part autodoser, and my test results are in the optimal ranges across the board...

0 NO3, 0 PO4, 420 Ca, 10dKH...

This is before doing my weekly water change this week... so can I reduce my PWC frequency now that things seem stable? What do you all do for water changes? How often? I realize that replenishing some trace elements is also important, but if I can reduce the water changes (and save myself time and money on salt mix) I would love to.

fort384 is offline   Reply With Quote
Old 10-28-2012, 07:20 PM   #2
Aquarium Advice Freak
DWilliams's Avatar
Join Date: Jun 2012
Location: Charlotte, NC
Posts: 314
IMO I'd say you would be ok doing a 20-25% water change once a month, just watch your levels & see how much they change.

DWilliams is offline   Reply With Quote
Old 10-28-2012, 11:13 PM   #3
Aquarium Advice Newbie
Join Date: Oct 2012
Posts: 1
be very scarce with water changes

we think we know best, but the environment of a tank is very sensitive. even if the water is dirty, doing abrupt changes can kill all your fish. the best advice i ever got was to do a 25% water change evry 2 to 3 weeks...thats all. Remember that water changes very slowly in a tank giving your fish time to adjust. The quickest way to kill all your fish is to do a radical cleaning (and by radical I mean just 60%). Like everything in nature, it shouuld be done moderately, slow and steady.
ybauza is offline   Reply With Quote
Old 10-30-2012, 09:35 AM   #4
Aquarium Advice FINatic
boardsurfer's Avatar
Join Date: Aug 2003
Location: Charleston, SC
Posts: 824
It depends on what you have in your tank. Are you heavily stocked with fish and/or corals? Are your water parameters in check? Is it FOWLR? It also depends on how old your tank is, in my opinion. If it's a newer tank, then of course you'll need to do more water changes, but if you have a tank up and running for 8 to 10 years or more, you have a miniature ecosystem in place and may not need to do as many water changes. For example, if your chaeto in the sump is working FOR you.

I used to do 20% every two weeks, but lately, I've been doing a 20% change once a month. I'll keep that schedule up until my parameters tell me otherwise...
- Mike
125 gal. reef w sump/refugium & 8-bulb 640w T5's
45 gal fresh w/plants + CPF lighting
boardsurfer is offline   Reply With Quote
Old 10-30-2012, 09:48 AM   #5
Aquarium Advice Addict
Hondatek's Avatar

POTM Champion
Join Date: May 2011
Location: Virginia Beach
Posts: 3,969
Following this one. I do 30 gallon pwc a week in my 180 fowlr tank . Stock is a porc puffer, emperor angel, whitecheek tang and a naso tang. Tbh I'm not really sure what would happen if I skip a week or 2.
Feed your Filtration
Give it to Porc Chop he'll eat anything!!!!!
"This is my tank and these other fish just live in it"
^ Quoted from Porc Chop^
Hondatek is offline   Reply With Quote

change, water, water change

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 05:52 AM.

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