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Stubborn algae scrapper

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Having had 75g fw that grew a hard green algae on the glass that plastic scrappers couldn't remove, I thought I'd share this scrapper I made for saltwater coraline algae removal, which I used a few times a year on the fw glass.

It is a 3/8" dowel with a thin curf cut made halfway through at an angle.  A coping saw or a multitool blade makes a cut that a straight razor fits firmly into without being so tight it is dangerous to push on or take off.  

Works great!  No scratches on a 4 y.o. Nuvo 10g. Do not use this on acrylic.







Here is the angle





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