Seachem Algae Scraper Replacement Cartridge Kit

I use these regularly to replace the blades in my algae scraper for my fish tank. It depends on how often you use it, but in my experience they last a few months, scraping well. Easy to replace too.

Does a great job getting the glass clean on the first pass.

The scraper is effective, but it has scratched the glass wall of the aquarium, so I regret the purchase.

This is a one-pack cartridge replacement for the Seachem algae scraper, which is an outstanding product. It has 3 functions: a plastic blade, a metal blade and a scrubber pad. This is possibly where the "3 pack" reference in Amazon's product title came from? Amazon isn't the best at product titles, but that's not a physical fault of the product.