No.
Safe, surely, however they won't eat them, as they are predatory fish. Likely they would simply ignore algae discs.
Generally it is a good idea to leave some algae. However, if you want to clean the tank very thoroughly and you are worried about the amount of algae left for your bottom-feeders, the best option is to buy algae discs. They are fairly inexpensive and you can find them almost anywhere that sells fish. They're located next to the fish food and usually a few discs will keep your bottom-feeders from going hungry until algae naturally grows back.
The disk is under the piano at the light house. However the disk is dirty so you need to get the cleaner from the left of the stage.
what is difference between compact discs and digital versalite discs
Depends on what kind of "discs" you're referring to... (compact discs? brake discs?)
A zoopraxiscope is an instrument with rotating discs which, when placed in front of a light source, uses photos to mimic the natural movement of animals.
discs
Compact Discs is the correct spelling.
Crammed Discs was created in 1980.
Discs of Tron was created in 1983.
Werk Discs was created in 2004.
GO DISCS GO DISCS