Ok so today I got a chance set up some MP40s that I got from a friend that we took down his tank. One was a older style that is four years old. Here is what the uncoated magnet looks like now!
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No wonder he was having water quality issues!
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View attachment 4267
View attachment 4268
No wonder he was having water quality issues!
Sent from my DROID BIONIC using Tapatalk