
I have a Marineland Corner 5 acrylic pen and it works very well on a flat surface but algae is difficult to remove on a curved surface. I can still recommend it, it does its job very well.

Jasonwell Magnetic Aquarium Fish Tank Glass Algae Cleaner - Floating Brush (L Size)
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Mini pump Xiaomi Mijia Electric Pump 1S, plastic, black
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Efficient 2-In-1 Magnetic Fish Tank Cleaner With Non-Slip Design And Scratch-Free Blades
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π U-BCOO Aquarium Gravel Cleaner Fish Tank: Manual Siphon for Efficient Filter Gravel Cleaning and Water Change in Tanks
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Faucet for kitchen (sink) Blanco Fontas II (granite) pearl
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9 Review

π AquaticHI 27-Inch Aquarium Tongs - 100% Reef Safe - Multi-Purpose for Fresh & Saltwater Fish Tanks - Clip Plants, Spot Feed Fish & Coral - Keep Hands Dry
9 Review