I got a MJ1200 Mod with stationary magnet about a month ago from CKreef. It has two sizes of impellers and works great. It is just a little too much for my 90 gallon. I am looking for 45 bucks.
I want to say that it is about 8 months of so, but I cannot say for sure. I am not sure how long the previous owner had it. I do know that they did not run it all the time. Same with me since I had it. Put it on a timer to come on 15 minutes ever two hours.
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