i recently got a mag float for cleaning my tank glass i wasnt impressed at all it hardly cleaned the glass and scared my 6 inch green severum so bad has anybody else had similar expierence

My puffer tries to attack it.

ive had no problems at all with my glass cleaner. but one of my oscars does try to attack when it gets to close to him.

mag floats are ok for normal algae (my plec takes care of this- i know they are not recommended but they are slow growing and my tank is big enough i hope)

But i do get some algae that the plec dont eat and it is a cow to get off the glass. I have tried a scrubby to removed it and it takes ages. The best thing to remove algae(stubborn or otherwise) is a Tetratec aquarium glass scraper. Mine is the GS45 model. It like a razor blade on a stick. It removes all algae in seconds. You do need to be careful as it has exposed sharp edges that could cut an inquisitive fish