Water change

[Mil26]

How many gallons should I change on a 20g tank weekly ?

 

[Randy Holmes-Farley Verified Community Expert]

You'll get a wide range of answers, from none to a lot. I think the average change is probably equivalent to about 1% daily, however you want to spread that out. That's what I do.

I discuss water changes, along with what they can and cannot accomplish, here:

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

 

[d2mini]

I think you will see the majority of people recommend somewhere between 10-15% if doing it weekly.
So in your case, I'd probably do 3g. And since it's so little and saltwater is pretty cheap, I might even do as much as 5g.
I have a 10g nano at the office and I usually change out around 2 gallons.

 

[zemuss]

How easy would it be to do 1 to 2 galons 5 times a week?

 

[beaslbob]

I'm sorry I can't help. I don't do water changes.


my .02