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Thanks a lot for the answers! As a side question do you leave it in the tank 24/7 or put it in each time you use it? And how often should I do it -- daily, weekly ??

I know this is probably a dumb question - but I just started my first tank a few days ago. I bought a magnetic algae scrapper, and I was going to use it last night, but it looks like a rough plastic velcro material and I'm afraid it will scratch my tank. By the way I have a glass tank. Is...

Thanks for the replies. It makes me feel a little better starting off without one!

I'm setting up my first tank (125 gal) in the next couple of weeks. Most of the posts I've read seem to talk about the refugium like its the best thing since sliced bread, but the owner of my LFS kind of talked me out of it (He is helping me install and set up the tank). Do any of you NOT...