Expiration date of water?
Hello planted-tank experts,
My weekly water change routine goes like this: I make 30L of RO-water, put 30L of tap water in buckets the night before. The day of the water change I mix it in two big 30L buckets with a small circulation pump. I add a heater to each of the buckets.
This takes a lot of time walking around with buckets.
I'll be away from home more in the future and my girlfriend/a friend will take care of the fish so I want to make it more easy for them by mixing the two sometime beforehand. I'll buy a big container (black plastic) people use as a rain barrel with a small heater and a pump. That way you can just take out 60L of water out of the aquarium, get the hose from the big container, start the pump and be done with it. That way I can prepare everything and it doesn't demand to much of them to take care of the fish.
I know you can keep RO-water for a very very long time but what's the expiration date of tap water? That way I know the max size of container I can get and the max time I can be away from home without the tank being an annoyance to my friends and family..