by Larry Maras.

Here's a DIY project anyone can build. This scraper works well for getting off the tough stuff that an algae magnet won't remove. One word of caution, you are using a single edged razor blade that could do a lot of damage to the caulking inside your tank. So, stay away from the seams. Without the razor blade in place, it works well for stirring the sand, uprighting a tipped over snail, or many other things, all without putting your hands in the tank.

Unassembled algae scraper.

Above you see the cut parts laid out on a table. I used 1/2" cpvc, regular pvc would also work. You need a straight section about 30" long, or whatever length is handy for you in your tank. Then, attach a 45 degree elbow to it, no need to glue it on. Finally, cut a short section of pipe about 2 to 3" long and insert it into the elbow. At the end of the short section, cut a slot using a hacksaw. This is where the razor blade is inserted. I also used the hacksaw to cut the end of the short section back at an angle, so as to allow me to get into tight spots. That's it!

Enjoy.

Assembled head of the algae scraper.

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