How many times you do a w/ c in one month

  • We are currently upgrading MFK. thanks! -neo
I would hate to see your water bill if you have a big tank! Why so much and so often?

I have dirty redtails.their small. 7 and 13 inches So I like to keep the water crisp. Its about 100g thankfully I don't have a water bill. Kinda nervous when I get my 450g tank together lol
 
No less than a 50% every week. Doing two or sometimes three a week isn't uncommon.
 
40% twice a week on 55 gal goldfish tank .
30% monthly on 1700gal planted tank.( very lightly stocked).

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