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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I believe they have a very very fine sandpaper component that makesthem so efficient. It is a little rough on your hands if you scrub for a while, and I could see it taking the finish or something off stainless steel maybe. I know that when we do it on the walls, we have to be super careful not to go too hard or too long because it doesn’t justtakeout a scuff, it’ll wear the paint all off