If you haven't been doing large water changes for the past while then I caution you about starting with large ones now. It may end up throwing off the balance of the tank. I would suggest doing smaller 10-20% changes every other day for the next week. Then stick to a resonable schedual from that point on.
The good thing about doing larger water changes is that if there is an emergency and you need to get toxins out of a tank fast (say a small child dumps a whole bottle of food into the tank) then you won't risk the tank water being much different fromt he tapwater you use to do the water change.
The good thing about doing larger water changes is that if there is an emergency and you need to get toxins out of a tank fast (say a small child dumps a whole bottle of food into the tank) then you won't risk the tank water being much different fromt he tapwater you use to do the water change.
