Our algae scrubber sponge packs a massive punch! This will easily replace using razor blades or other tools for cleaning your glass, these sponges get everything with just a little elbow grease. I've personally used them on aquariums to get rid of hard water stains and algae. Works on glass and acrylic tanks and is fish safe.
Some people even use our sponges in their filter as bio bacteria and prefilter guard!
Worked well for my aquarium and they were reusable for a couple weeks - good price too
Clean all my tanks good was great for cleaning my killifish container without scaring the fish!
Very good product removes algae easily, just rinse and reuse. It cleaned outside glass well. Will purchase again.
It works surprisingly well.