Originally Posted by dramaqueen
I've heard some say you can cycle a tank that size and some say you can't. I'm confused! lol
While it is
possible, it is very precarious to do which is why some people advise against it. I accidentally cycled a 1g thanks to the bacteria on the roots of a java fern I put in the tank but looking back I was walking a really fine line lol!
The problem is that the water parameters are considerably less stable in a 1g (which could kill the bacteria quickly if anything goes wonky). Also, how could you be sure there is enough surface area for the bacteria to live in? In larger tanks you have lots of gravel and a filter but in a 1g all you can fit is a handful of gravel. Will this be enough to house enough bacteria to clean up after a betta?
Bottom line I think you are a lot safer to simply do 100% water changes every 2-3 days. Even if
you cycled a 1g you would still have to do 25% w/cs every 2-3 days. So it will save you more grief to just do full ones.