Magnetic Aquarium Fish Tank Glass Cleaner Brush- Scrubber Floating Clean Brush For Aquatic Algae Cleaning-Big Medium Small Size(M,Blue)

Says 'be careful because of strong magnet' I can only assume they forgot to fit this ''strong magnet'' because what is fitted feels more like it has the fightback strength of an One Hundred Year Old Lady! now i have to waste yet more time returning this piece of crap... You should have to return goods which blatantly LIE about their quality!!

I bought the Medium size for a 105 litre tank and it feels about right. If the tank was any smaller, the Small size would totally suffice and I think the Medium can take you up to 2-300 easy before it would feel inefficient. Although I try my best to keep up with tank maintenance, so I've not really pushed this thing to any sort of limit, it seems to do a great job at gently scratching off the algae from the glass of your tank. The magnets are really strong and the handle is easy to grip. The fact the tank side floats if it comes disconnected is nice. My only gripe would be that I thought the blue area would be a soft, grippy rubber, but instead it's a hard plastic with quite hard nodules to aid grip, making it not the most comfortable thing in the world. That's really a small gripe and I only point it out to be hyper-critical. All told it's a simple job, but this particular tool is great at getting it done.

The part that is supposed to clean the glass on inside of talk is like a spiked plastic material which isn’t very good for the job intended. The same kind of cleaner but with the felt type materiel on magnet inside of tank is much better. I made the mistake buying this one thinking that it was the one with felt cleaner. Big mistake as this one is total rubbish

It's a powerful magnet that does the job nicely. It's useful that the scraper will float to the surface if connection with the outside magnet is lost. My only issue is that in my hexagonal 25 litre aquarium it's a little too large and awkward to manoeuvre on the glass . In a bigger tank this would be a dream, in my smaller one it's a little inconvenient. This is definitely suited to larger tanks than mine, but still works well.

I brought the small and I'm glad I did. Was the perfect size. I only have a 25 litre aquarium but I would say this would be suitable for much larger as well. It works perfectly. Cleaned my aquarium glass up a treat and quite quickly too. Magnet is strong enough but not too strong. Still holds when going round corners. A must have for all aquarium owners.

I was somewhat disappointed with this product as it removed algae only superficially and is nowhere near as effective as simply using a clean cloth and doing it the old-fashioned way. The magnets are very strong though and unless the aquarium glass is very thick, you won't have a problem in using it. As I say though, it's not hugely effective for serious cleaning.

Love the power of the magnet. It will move from glass pane to glass pane of my tank without losing power like some I've used in the past. So you can clean the whole tank at once!

The surface of this glass cleaner is comprised of lots of small plastic nodules. In the past I have had cleaners with a Velcro type surface. This glass cleaner just isn't that good at cleaning Algae marks off of the glass. You have to run it over the glass many times to get the Algae marks off. I think I wasted my money on this one.