Water change amounts

[Cliff]

I'm just woundering what everyone else's water change routines are like. I've been changing about 9% (10 gallons from about 115 gallon set-up) each week

I'm interested to hear what everyone else is doing

[Jfish]

I've been changing out about 25 gallons from my tank every week. I've estimated total water volume around 250 gallons so about 10%. I find that to be a good routine but every once and a while work/life will get in the way and i'll miss a change.

[mich denis]

i have about 90 gallons in my system (for now).
i change just under 20 gallons every 2 or 3 weeks.
i also have a low bioload with one GBTA, small amount of zoos, 4 fish, a shrimp and about a dozen snails.

[chandler]

12 gal nano cube i change 2 gallons every week. probably less now that i gor rid of all my corals and only have 1 blue damsle, 1 sally lightfoot crab, 1 pistol shrimp and various snails

[kelbri]

I try to change 5g in a 29g tank every week, but some weeks go without.

[NewbReefer]

I have roughly 65g in my system and try to change 30 litres (a wine making pails worth :thumb:) worth a week.

[Myka]

I change about 9 1/2 gallons weekly. My tank is about 85 gallons net (including the sump water and minus displacement from rock, sand, glass, actual water level, etc). It is a 90 gallon tank with a 30 gallon sump (half full).

[TheMikey]

I change out 3 gallons every other week. (15 gal tank).

[TDerow30]

I have a 50 gallon tank and I do 5 gal water changes every sunday :)

[Zoocrazy]

Change five gallons a week. Fifty gallon tank with sump and live rock.

[Myka]

I've changed to 20% bi-weekly and like the results better.

[Gordon Wright]

10% a week, sometimes 10 days or more. If it goes longer I'll change 15% when I get to it. Mixed reef, instant ocean salt. Mag, calc and alkalinity stay the high end of normal. Using calc reactor and kalkwasser in top off.