large tank with no water change?

[ziggy_impy]

I was just curious how many people have large tanks that do not use water changes, and how are the parameters in your tank?

I was wondering if there is a certain size tank that is big enough to keep things stable by itself, using a skimmer and other filtration, and does not require water changes?

 

[Underwaterparadise]

IMO any and all size tanks need water changes. If you don't want to change water then you really shouldn't set up a Aquarium. It's only a matter of time before a tank will crash, it may be 1 year or 2 but you will come home one day to find a disaster.

 

[mflamb]

Water changes help prevent "aquarium entropy".

 

[ziggy_impy]

I have a 75 gallon reef tank and do 10% water changes with RO water weekly. I was just curious if there was such a thing as going big enough to not have to do water changes...

 

[93292_FishGuy]

1.3 billion gallons :lol: