Max Time Keeping Marine Water in Water/Air Tight Drums
Quick question... I have several water and air tight 25 litre drums, which I use to purchase marine water for my aquarium.
What is the maximum time I can keep this water before it "goes off"?
I imagine as long as the water quality levels are good, then the water should be good, but as a general rule is there a max number of weeks to keep the water?
I like to have at least 50% of my capacity on stand-by in case of emergencies.