574 Magna Sweep Small Algae Remover, PennPlax A string connects the magnet inside to the magnet outside, giving a retrieval method if a quick move knocks them apart. These were a very reliable scrubber, and still are. But the new Mag Floats have made them look a bit primitive. Available in multiple sizes, we only have the small in stock. So, we have a sale price until they are gone. And then we will discontinue them. Add a little convenience to your maintenance at a great price, while they last.

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