My authentic Japanese didn't break at the stem. But I do agree, They aren't made to throw around. They are however made.to clean nutrients from a reef tank. I've used the tunze, ice cap k1, even an old red sea prism. The Mame out performs all of those by a long long ways. However it could be because I've set the mame up better than the others.There are also Chinese knockoffs with the same design at half the price on AliExpress.
I had one and I snapped the drain line glass bit off while cleaning, not a good match for clumsy reefers.
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