going to kind of be a useless comparason isn't it.. the skimz is rated up to 500 gal where the Vertex 250 is only rated up to 250 gal
the asm G3 is also only up to 250 gal. you need to compare size rating to size rating.
Steve
Just take the comparason and multiply it by 0.5
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Glass box with stoney stuff and fisches...