ok, the accountant in me has to kick in a comment here.....25% of a 55 gallon tank would be 13.75 gallons.
Now, if you don't mind Tank I'd like to hijack this thread for just a second to add a question.
I do a 20% pwc
each week on both tanks. I've always calculated my pwc
's on the total....including the volumn of the sump. Is this correct?
For example....I have a 72 gallon tank with a 20 gallon sump....therefore; I'm assuming that if I wanted to do a 20%pwc
I'd do 18.4 gallons?
I'm sorry! It's a numbers thing with me....a sickness of sorts. LOL