water changes

[michika]

5g/40g each week which equals ~8%

[rigger11]

really catherine that little?

[christyf5]

15% weekly sometimes 10% if I'm lazy or need to do a big w/c on my nano

[argileh]

15% weekly on a 29 g tank, skimmerless

[andrewsk]

15% (40 Gal) on my 300 Gallon system weekly.

[Chowder]

I do a 15 gallon water change on about 80 gallon system.

[Doug]

5g/ week on my 45 cube. However, I also only did about 5g per week on my larger tanks but they were running with large becketts and my turf scrubber.