Water change on large tanks

[gordoncheers]

I am experienced in water change for large freshwater tanks but not so much on saltwater ones can anyone explain to me how it's done? by large i mean 500+ gallons. Is it possible to be done without a reservoir and only a rodi unit?

 

[Waters]

To do a 500 gallon water change, you need 500 gallons of saltwater ready to go. I don't see a way to do it without a reservoir of reserve water if there is livestock in the tank.

 

[Reefering1]

500g water change? What size tank?

 

[LPS Bum]

Not many people keep 500 gallons of saltwater on hand at one time. So to answer to your question, you’d need a VERY large reservoir of saltwater to accomplish that.

How big is this system anyway? It has to be enormous.