I had an aquarium when I was young and if there had been a magnetic fish tank cleaner to do the dirty work it would have made my life a whole lot easier.
These are great for getting rid of the crude on the inside of your tank without getting your hands all wet and smelly! No more hand scrubbing with a nasty algae pad.
Keep in mind it’s very important to get the correct magnetic cleaner for your type of tank. If you have an acrylic tank do not get the glass type cleaner as some serious scratching could occur on your tank. Magnetic cleaners are available for acrylic tanks. Something else to keep in mind. Buying a size bigger than what you need might be worth it in the long run.