Well after 6 years or so my AlgaeFree Hammerhead cleaner is no longer any use to me. The magnets are now bulging out and only contact on the glass now is the size of the magnets. I'm thinking on switching to the Magnavore Cleaning Magnet
http://www.reefsupplies.ca/online-st...d-acrylic.html
Has anyone tried it? IMO the Magfloats are complete junk so no need to recommend those and I was very happy with the Algaefree brand.