how many gallons are you changeing???

[scarter]

just to get an idea of how many gallons most large tank owners are changeing

I change 20s gallon a week on a 200 or 10% a week
how about the rest of us?

 

[jacob30]

60 gallons every two weeks on a 350 g tank +50 gallon sump.

 

[john37]

my main tank is 225gal and sump has about 80gal. i change about 30-40gal every week and a half of so.

 

[Hendersonracing]

20 gallons a week on my 210!

 

[TCU Reefer]

40 gallons every two weeks on my 215g.

 

[poknsnok]

25 pr week on my 240 system

 

[bstone]

200 gallons per month on my 1100 gallon system. So, about 18% each month.

 

[fishaholic911]

60 gallons every 2 weeks on my 300 gallon with 100 gallon sump.

 

[DrBDC]

32 gallons a week on a little over 200 gallongs total.

 

[MG21]

30 a week on my 240 with about 60 total between sump and fuge. So about 10% weekly of 300 total gallons.

 

[ricks]

25 gallons twice a week, 200 - 250 a month on 650 gallons of system water....

 

[jacob30]

Depending on your goals for a water change ie: nitrate reduction, phosphate reduction, getting rid of nasties or if you are adding water to supplement certain elements for water chemistry there may be a few approaches.

Read article below.

Jacob

 

[jacob30]

Here it is I believe:

http://reefkeeping.com/issues/2005-10/rhf/index.php

 

[lfduty]

30g every 2 weeks on my 225. and 20g on a 55g fuge-sump.REEF.