Water Change

[aarmatting]

how often should i partial change?? It's a 29Gal with a 250 Skilter, 250 Aquaclear, 402 Powerhead and 3 Inches of Carrib. sand....??????:nervous:

 

[007]

I change 5% every week on my 22 gallon.

 

[aarmatting]

thanks 007