So, I have a 2.5 gal NPT that I like, but I want to change the gravel out of for sand. The only way I can do that is by changing my ten gallon to a NPT and sharing my sand between the two. But I don't have a large bucket, and unfortunately I don't have a spare ten dollars to spend on a three gallon bucket at walmart. Is there any way to do the conversion that doesn't involve a bucket? I'd like to do it, as I have tons of leftover potting soil from doing the 2.5, I'm just not sure how to go about doing it.