Matala Hakko Standard Air Manifolds
Matala Hakko Standard Air Manifolds
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Hakko Metal Air Manifolds give more outlets than the heavier duty brass manifolds. However, in most cases, Practical Garden Ponds still recommends the heavy-duty brass manifolds (see link below), since each outlet is fully adjustable.  As such, they offer more of an option to adjust flow rates through different air stones and help eliminate back-pressure.
6WAY 12WAY C-6 C-12