Yes they can move and do move. They also get out of control fast. I am currently battling a take over attempt with them myself. Between that and GSP not sure what will kill me first.

What are you wanting to test for? I prefer Hanna testers but redsea has some good ones. I find that API are not as accurate as they should be. A lot of personal preference. If you have about 2k to spend I think aqua spin has a cool toy but not likely what anyone can afford to just test.

I have this leather which was smaller than a dime when he hitch hiked in to my tank. Now he’s about 12 inches wide. Is there an easy way to frag him and reduce his size with out killing him?

@Swimmers Lounge still use the shrimp method. Seems to seed the tank more than the turbo. Tried turbo on my smaller tank and 2 years later can’t get it to stabilize and all it produces is algae. The death of me I think lol but I know it works for people so going with user error maybe.