Aqueon Mini Bow Algae Cleaning Aquarium MagnetThe Aqueon Mini Bow Algae Cleaning Aquarium Magnet is the easiest solution to effectively remove algae from your mini bow acrylic aquarium. The bottom-weighted scrubber falls straight down after separation. The bowed bottom weight allows the scrub pad to rest above the gravel for easy retrieval while reducing the risk of scratching the aquarium walls. Keep your desktop aquarium looking clean and clear with the easy to use Aqueon Mini Bow Algae Cleaning Aquarium Magnet. Additional replacement pads are sold separately.