Originally Posted by peaches3221
I keep my betta in a one gallon jar, and he's fine! you just have to remember to change the water at least once a week. very pretty boy!
What??? 1 gallon tanks need at least 2 full water changes a week, preferably one every other day. Have you ever tested the ammonia in that tank.
I don't mind keeping fish in 1 gallon tanks, especially long fins but it is hard work getting all the tanks cleaned, especially when you start talking multiple tanks. Don't let your water quality get down. HMs have a lot of fin which means more likelihood of tears which means higher incidence of fin rot. Don't let that happen just because you couldn't manage 3 water changes a week.
Besides water quality heating is the second most important thing you must have. Get a heater and a thermometer and make sure it can heat to at least 76* with 80* being preferable.