Water Changes: how much how often?

[Smiley]

Curious to know how much you change out and how often....

I myself like to stick to 25% WC once a week, sometimes 2 weeks. I do this even if all my tests are within parameters.

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[CRW Reef]

I like where your head is at Fred! I do 6 gallons every 3 days which is like 27% every 9 days.

 

[J.guokas]

I usually do a 3 gallon water change every week which is 10% for my tank.

 

[jahmic]

The cyano outbreak in my tank has been telling me I need to start doing more than my usual 10% every 1-2 weeks, lol.

I finally stuck the big blue 55g drum in my tiny kitchen over the weekend, and will be doing 20% weekly from now on. I may split it up into 10% every 4 days or so depending on how the tank's inhabitants react to the larger water changes.

 

[Bajamike]

55 gallons once a week for us which is like 7% lol

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[mathewkofalk]

15 to 18 gallons a week which is about 15 to 18 percent of my systems total. Was thinking of moving that to everytwo weeks but not really wanting to chance it.

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[SkyDiv3r17]

I do about a 22% WC every 2 to 3 weeks depending on my school schedule.. Im about to up that to every week/2 weeks though.

I like where your head is at Fred! I do 6 gallons every 3 days which is like 27% every 9 days.

FYI. If you do water changes every 3 days, by the 9th day, you did a 23.5% WC ;P (assuming you have a 72 ish gallon tank?) If you water change 3 days after another WC then your changing out some of the new water, which is where I get the 23.5%

 

[xxHLTxx]

40 gallons/2 weeks.
Single water change on a 267 total volume system.

 

[newtoreef]

I do about 5-10 gallon wc once a month that's 9.2% a month

 

[asn-naso]

I do about 20 gal every 2-4 weeks (about 20%). I have good coral growth, and a ton of coraline too.

 

[ReefCheif]

50 gallons a week - about 20%

 

[jahmic]

55 gallons once a week for us which is like 7% lol

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Shut it. Lol

 

[sethsolomon]

20g(30%) water change try for every week but occasionally hits every 2-3 weeks.

 

[jda123]

I am not on a schedule, but roughly a 35 or 44 change every other week on either tank. I will do it more often if I add lots of sulfates or chloride ions to the tank with some 2 part if I take my reactor down for a few days.

 

[Munch]

10% weekly

 

[deboy69]

20% (40 gallons) once a month or less

KCCO

 

[Andrew_bram]

I was doing 40 gallons a week however with my system being so new I switched to 20 gallons a week in a glass mixing container. At 40 gallons I was doing 80% a month way to much for small bio load IMO.

 

[DyM]

Skim wet which takes about a gallon a day out. Plus do around 30% once a month.

Total water, about 100gal. Water change is 30 gal of a brute trash can once a month.

 

[subpotentjoe]

10% once a week

 

[mathewkofalk]

You guys ever see the youtuber that didnt do a water change for over a year........he stopped posting videos suddenly.

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