I bought this product in early 2014 so I've had quite a while of experience with it. I enjoyed this product while I had it in my tank I removed it a few months back to give the glass a good cleaning and just never put it back. I was picking up some extra equipment and went to move the portal when I noticed the inside scrubbing part had some buldges. Upon further inspection the seals had come apart and what I assume was the magnet was completely rusted and crumbling apart. IMO this is real crappy design for something that is suppose to remain in your aquarium. Didn't even last 2 years. IMO, stay away from these. I am going to email the company and see what they say.
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