How often do you do a h2o change? (honestly)

[jmesmcm]

Twice a week, five gallons each time on my 37 gallon tank.

 

[mlm]

I do 10% every 2 weeks.

 

[fish for life.]

I do 15% every two weeks, probably two much since I have no fish.

 

[lionpicasso]

10-20% water change once a month.

 

[thewolfman777]

if i do a change once a week i do 5 gallons
if i do a change once every other week i do 10 gallons.