Top critical review
Quality Control is Suspect (to say the least)
Reviewed in the United States on November 25, 2016
Don't know why, perhaps due to rising demand and production bandwidth, but be forewarned quality control is an issue. Assembly is easy enough, though have gap where back separator does not fit snugly after tightening nuts as firm as they will go (see pic). No water level sticker on tank received, so had to measure water manually according to calculations (4 gallons). Siphon was not air tight (even though release valve closed firmly), so had to manually pump instead of siphon. S4 monitor only flashes, not working as of yet and now have to take a apart top of unit to figure out why, currently not resolved after verifying connections and looking at simple solutions on website.
Unit itself does seem sturdy and smooth. Will see how it holds up, plan to use frequently once kinks worked out. Just one minor thing after another with getting started. Might want to anticipate exercise in patience rather than immediate physical exercise upon receipt.