Mixing Container Size Compared To Tank Size

[Tuffloud1]

What size containers do you all use compared to your tank size?

I have a 262 gallon tank with a 74 gallon sump (total volume) on order.

I only have enough room for 2 - 55 gallon containers (1 for RODI, 1 for salt mixing).

I am going to run continuous water change, but I was curious what size everyone uses compared to their display size.

 

[SPR1968]

Im currently about to order 2 425 litres containers and I work on the principal I need enough RODI ATO water for at least a 2 week vacation (with water refill turned off if I want to) and enough fresh saltwater for continuous water changes over 2-3 weeks.

This is on a new system of around 530 USG (2000 litres)