When to start weekly WC's??

[dayak]

isnt it the filter for?
to filter out the bad substance for the living inhabitant so you dont do WC too very often and change the WC as necessary?
and how do you find it as necessary?
ofcourse by monitoring the parameters as the time OP posting his parameter, you can't get more prestine that that.

 

[dayak]

Its not even really that.

Just realize that these animals are swimming around in their own waste. Why wait for water quality to get worse before doing an h2o change?

The larger, and more frequent the better, 9 times out of 10 IMO.

if you really doing what you advising you doing i can guarantee you, your fish will be healthy and have no problem with no filteration since you pretty much what you doing is replacing the water instead of filtering it