The simple mod for the Tunze 6025 is easy to do and jumps the flow up to over 1000 gph, one estimate is 1200 gph. the Sureflow kit makes the maxi jet 1600 gph.
I have 2 modded 6025s and a sureflow 1600 on a MJ1200.
Cant go wrong with either, the tunze is a bit smaller and the new clamps wont break as easy. The sureflow starts right up, the tunze i have to help get started sometimes.
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