You can probably buy the parts from a hardware store. I think it would be difficult to clean a 30 gallon tank. Their poop sticks to the sides of the container. I dump 3/4 of the culture into another bucket when I clean. Their is a lot of crap settled at the bottom & stuck on the sides of the bucket. That's why I dump the last 1/4. I can then easily rinse out & clean the filthy bucket. I couldn't do that with a 30 gallon tank. They produce a stringy slime gross gunk. You will see after you start culturing them. I recomend using a bucket. Rotifers also need to be fed daily.
