Can i keep saltwater aside till i use it?

[edc_aquarium]

Im just starting to make my own saltwater, im going to be using reef crystals and i want to know if i can make a few gallons and set aside till i use it and if so how long can it be set aside for

 

[eb_reef]

This is one of those debated topics with no 100% right answer. I personally only make enough for what is needed a few days before I need it, a week at most.

 

[ReefingwithO]

People do auto water changes where they mix up saltwater once a month and use it over the course of the month. That is what BRS is doing on one of their ULM tank series.

 

[EW_Fish]

I would just set a powerhead in there. I make my batches up about twice a month I like to keep 30% of TWV aside in case of an emergency

 

[Flippers4pups]

You can keep saltwater for long periods of time, months, if the container has a lid that seals tightly and in a cool location away from light.

Circulation isn't needed. Polypropylene and polyethylene containers for portable water/food grade are recommended.

 

[Fin]

I keep it for months at a time in a covered 55 gallon drum. I have a mixing pump in the barrel that kicks on 4-5 times a day to keep the water mixed up. I also have a small reactor of carbon with a small pump that keeps the water crystal clear and a heater with an Inkbird temperature controller (not pictured here) to keep it at a constant 79°. All I have to do to pump water out of the barrel is flip a switch to turn the circulation pump on and turn a couple of valves.