Aquarium Scraper for Stubborn Algae

For the hard to remove algae on aquarium glass (not for use on acrylic).

1. 3/8 in wood dowel (cut to appropriate length for your aquarium).

2. Single-edge razor blade.

3. Small machine screw.

4. Super glue.

Make notch only wide enough for the razor blade holder edge to fit snugly.

Drill through to slot.

Tape cutting edge while inserting and tightening.

Rinse and dry after use, especially if used in a saltwater aquarium.

You can prolong blade life by spraying with lacquer.

Blade can be easily replaced and re-glued.

Remember, DO NOT USE ON ACRYLIC.