What do I use? An old credit card. Try it. Its near the very best way to remove algae from acrylic without making scratches. Heck,in time the card becomes just blunted enough to be very safe. I even use the credit card on a glass aquarium I have outdoors that can really grow algae on the glass and the credit card remove it in sheets.
No razor blades, no magnets.
Just have credit!
No razor blades, no magnets.
Just have credit!
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