What does a 10% water change include?

Crosby · 01/28/2008, 11:40 AM

When calculating how much water volume a 10% water change is, does it include the main display or main display, sump and refugium?

Agu · 01/28/2008, 11:44 AM

It's normally calculated by guessing total water volume of the system. I say guess because it's pretty hard to determine volume after the fact.

dileggi · 01/28/2008, 11:51 AM

I totally agree with Agu. It would be total water volume of entire system...display + sump + fuge. Like Agu said, a guess since it's usually hard...at least for me....to figure out totals gallons after displacement. I've always just went by the actual sizse of the tank.

01/28/2008, 11:40 AM	#1
Crosby Registered Member Join Date: Jan 2007 Location: Toronto, Canada Posts: 127	What does a 10% water change include? When calculating how much water volume a 10% water change is, does it include the main display or main display, sump and refugium?

01/28/2008, 11:44 AM	#2
Agu Registered Member Join Date: Oct 1999 Location: Sarasota, Florida Posts: 30,279	It's normally calculated by guessing total water volume of the system. I say guess because it's pretty hard to determine volume after the fact. __________________ Less technology , more biology . Current Tank Info: 30 gallon half cube and 5.5, both reef tanks

01/28/2008, 11:51 AM	#3
dileggi Premium Member Join Date: Sep 2007 Location: S. Philly PA Posts: 1,171	I totally agree with Agu. It would be total water volume of entire system...display + sump + fuge. Like Agu said, a guess since it's usually hard...at least for me....to figure out totals gallons after displacement. I've always just went by the actual sizse of the tank. __________________ Eric "The greatest trick the Devil ever pulled, was convincing the world he didn't exist." - Usual Suspects Current Tank Info: 90g w/30g sump; skimmer; 2x175w MH & 2x super white actinic...3g w/.5g fuge 1x150w MH Viper