Quote:
Originally Posted by jenson
Bro, mine also have the unit below the surface but i just attach the tube. I tot its supposed to be put below water to achieve best results?so far day 2 still crystal clear.
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Hi bro, if u want bubbles, the hydra must be place near water surface. If too deep, it do not have the drawing pressure to suck bubble from the top. Secondly, if u also use the black attachment at the other end of the tube, that thing can be adjusted for amount of air bubble.