I feel the same about plant names and families.. they keep changing the things, and the only reliable way to KNOW what plant anyone else is talking about is to use its latin name, common names are so regional.
I can't remember now what I made my undersand filter out of, but I know that it was home made using the information I was learning in water chemistry at the time. I even used sand out of the river and heated it to sterilize, instead of store bought sand.. we were a small school, and had to make do in many ways. But thinking back on it I remember wondering if that collected sand was the reason it worked so well.. because the organism were at least partially established in the medium already. All of this was pre 80's btw.. I graduated from college (after 6 years) in 1982.
Thank you sir.. added
I can't remember now what I made my undersand filter out of, but I know that it was home made using the information I was learning in water chemistry at the time. I even used sand out of the river and heated it to sterilize, instead of store bought sand.. we were a small school, and had to make do in many ways. But thinking back on it I remember wondering if that collected sand was the reason it worked so well.. because the organism were at least partially established in the medium already. All of this was pre 80's btw.. I graduated from college (after 6 years) in 1982.