when to change water?

[dnsfpl]

do i still need to change 10% of water once a month if all my water parameter are within acceptable range?

thanks

Just to let you know that my NSW 2ft cube (only with skimmer & PO4 FR) has to undergo at least 25L water changes every two weeks despite water parameters are within range.

[dnsfpl]

for reef tank, water change is good to replace elements
but for fowlr tank, should i stick to a routine too?

Originally Posted by dnsfpl

for reef tank, water change is good to replace elements
but for fowlr tank, should i stick to a routine too?

Of course you got to do it unless you want your fishes to eat, poo and sleep in the same tank or rather their own "toilet bowl".