Thank you for your support of Marineland products. If you inquiring as to whether the MJ400 will replace anything on the Magnum 350, no, it does not. None of the parts are at all the same. Here is a link to replacement parts for the Magnum 350: http://www.marineland.com/search.aspx?q=magnum%20350#/?filter.brand=Marineland.
Date published: 2017-01-03