Just the facts....

[Capt_Cully]

What percentage water change do you do?
How often? (please be honest)
Type of reef? SPS, mixed, softies..
Success? Great, Decent, some issues, slaughter house? (please be honest)

Cully: ~10% week (fairly consistent)
Mainly SPS
Decent success (problems arise when consistency wanes)

Obviously so many other factors at play, but I appreciate everyone's input......

 

[Tank14]

20-25% every three weeks
LPS and softies
Nothing spectacular, decent growth.

 

[Gary Majchrzak]

20% total exchange weekly (done via two separate 10% changes over the course of each week.)

I'm running a rather heavily fed display over here but I need to keep phosphates low enough for the health of sensitive corals.
Other's can judge whether or not they consider it a success

 

[aquadonkey]

Great thread!!

I change 5% two times a week.
I can't tell you about my success or failure yet - tank has only been up 5 months.

 

[cardiffgiant]

~10% weekly. If things seem "too clean" I do 5%
Mixed reef.
Decent success. I have a lot of growth, and a good success with the majority of SPS. There are some things that want to keep, but I struggle with. At any point there are some corals with excellent color and some with poor color.

 

[der_wille_zur_macht]

In the past I've always done large (20 - 30%) changes every 3 or 4 weeks.

On the 360g, I will be implementing small, daily changes (1 - 2% per day.) This is ever-so-slightly less efficient from an import/export perspective, but it keeps the tank a little more stable and makes the changes very easy to automate.

 

[pascal32]

20% every 2 weeks. Tank converted to reef for 3.5 months . growth is great, everyone looks happy. I have had some minor issues, though that could be from the 4 years of being fish only with a deep sand bed.

 

[Piazzon12]

One large 20% (30G) change every 1-2 months. Lately it has been closer to once a month.
Mixed primarily SPS tank.
Good success... I guess. Issues havent really stemmed from water changes, but other factors

 

[talon4x4]

What percentage water change do you do? 20%
How often? Every 2 weeks
Type of reef? SPS (only 2), LPS, softies, clams x3
Success? I have success with everything but SPS. However, I think I figured out why. Will find out in the coming weeks!!

 

[NirvanaFan]

15% every 4 weeks
Mixed Reef
Decent success. Good growth from softies, decent growth from sps

 

[Neoz]

15% every week (unless life gets in the way)
Mostly softies.
Success for me has been confusing. Palys, Zoas, Duncans All thrive and grow like crazy.
The few SPS I have don't really grow just stay the same.
Monti Cap of any kind nada. Just discolors and dies. Not sure why.

 

[wah-zoh]

10% weekly unless i add a fish then 10% daily for first 3 days.
tank looks clean test results are always good
corals i keep you couldnt kill in a toilet. j-k but really they are all easy to keep softs and lps corals for now.

 

[jfl14609]

I have always tried to do 20% every 2 to 3 weeks most of the time its 3 to 4 weeks unless something looks off a little then I be sure to do it two weeks in my mixed reef and feel like I have had allot of success

 

[diverdick]

- 10% wk
- SPS Dominated - Crammed Full
- Good Results

 

[oneradtek202]

10% every week
carbon change once a month
mainly sps but some LPS and softies
Bad Acan luck here, but i would say good success

 

[chrisqueenz]

15%bi-weekly,
Mainly SPS (small colonies)
Great results thus far here

 

[daveverdo]

Whatever, whenever.

You wanted honesty.

I change 10-15% whenever I get in the mood. I would say about twice a month based on how much salt I use. I have about 140g total water volume so 15% would be about 20g. A 200g bucket of Oceanic last me about six months so that averages to 10 changes of 20g over 6 months.

It is not always the same.

Mostly softies, LPS, fish, and a few SPS.

Dave

 

[superkat]

20% every 3-4 weeks.....if i remember. During a show? it doesn't get done...that's honest...and i have mad growth. HUGE success with LPS...just started SPS...have kept a few..others i lose just because it got attacked by something else a little too close. I do run my skimmer rather wet, however.

 

[dan10342]

What percentage water change do you do? 15% waterchanges
How often? (please be honest) once a week
Type of reef? SPS, mixed, softies.. Mixed reef, lps and zoa dominated
Success? Great, Decent, some issues, slaughter house? Decent success... if i would stop re-arranging stuff.

 

[Conesus_Kid]

20% about every 1.5 weeks on average
Mixed reef: SPS, LPS, softies, RBTA, Clam, fairly heavy fish load
Success: Best growth is shown by SPS. Softies and LPS grow more slowly. Not losing corals on a regular basis