I use 2 10 gallon storage tubs to hold mine in. It's a lot easier than having to fill and treat at least 10 1 gallon milk jugs every time I want to change water in my tanks, and it looks a lot better than having all those jugs laying around the kitchen...... It's easier too in that the temp is only a couple degrees different from what I keep my tanks at so I don't have to worry about warming the water to the right temp too. I like to let it sit for at least 24 hours so the super saturated oxygen has time to bubble up. That way I don't have to worry about any bubbles sticking to my bettas gills and chance burning them. I use ammo lock to condition my water. Before I used ammolock, I used prime, then always wondered why my water had a higher ammonia content after conditioning then before. Well, I did some research and found out that when chloramines are broken down, they turn into ammonia. Using ammo lock takes care of that ammonia so that way when I do water changes I can do it with ammonia free water.