Who Gives A Fish Forums

Hi all.

I've been noticing a huge spike in algae and biofilm growth since I added that new wood piece to my tank. The glass is now all blurry due to some kind of biofilm, and I'm considering getting rid of it.

Anyone have any affordable algae scraper recommendations or some DIY techniques using household items they can share?

I've found a decent solution that works for me. It's pretty effective at getting rid of green spot and diatom algae. A toothbrush also does the trick in a pinch.

This one's good too.

Aquarium Scraper, 25.6" Stainless Steel Scraper - it's effective and does the job well.

I've had the best luck with one-sided painter's razor blades. The other options just don't cut it - literally. If those pad-like scrapers pick up a single grain of sand, you're looking at scratched glass, and that's a disaster.

I've found that a Magic Eraser does the trick for me when it comes to algae on the glass. I keep one specifically for my tank to avoid any cross-contamination.

I also recommend the Mr. Clean Magic Eraser. Fantastic for algae removal, and the white color makes it easy to spot any missed areas. Easy to clean and reusable too.

The issue with pads is that a single grain of sand can get stuck and cause permanent damage to the glass. This is why I've always opted for one-sided painter's razor blades - they're a safer choice. I've had a tank from the 80's that's still in great condition, and I attribute that to using razor blades. On the other hand, I've had tanks where I used pads, and over time the glass became cloudy.

I've had no issues with glass scratches using pads, personally. Both pads and scrapers work for me, but if I'm being honest, scrapers are probably the way to go.

I've found an old soft-bristled toothbrush works well for me. It's not as quick as using a Magic Eraser, but I've had it lying around and I don't have to worry about scratching the glass. The toothbrush has a smaller head, which is a plus – it can get into corners and around hardscape without me bumping into decorations.