Fish Tank Outlet Construction:
• Take the fish tank and turn it so that the
narrow side without the tap faces towards
you.
• Take a measuring tape and measure
150mm from the top and 150mm from the
right-hand side. Take a permanent marker
and make a dot on the plastic liner.
Fish Tank Inlet Construction (Venturi):
• Take a 40mm T-Junction.
• Insert a 32-25 x 20 conical reducer into
the one end of the 40mm T-Junction as
indicated in the diagram.
• It is important that the nose of the conical
reducer pass more than halfway into the
40mm T-Junction. If the conical reducer
cannot go deeper due to an obstruction
in T-Junction, file the edges inside the
T-Junction down or alternatively cut a
20mm short piece of pipe into the nose of
the conical reducer. It is very important,
whatever option you decide that the nose
of the conical reducer or small piece of
pipe goes past the halfway mark.
• Insert the 32mm x 20mm Reducing Bush
into the top of the T-Junction and insert
a 30mm breather pipe into the reducing
bush. This pipe must be long enough to
stick out above the surface of the water.
• For the inlet into the venturi, cut a short
piece of 25mm pipe and attach a 25mm
90˚ elbow. Once done connect the elbow
to your 25mm main water inlet and you
are good to go.
• Drill a 50mm hole with a hole saw through
the side of the tank with the dot as your
centre.
• Place the 2” threaded nipple through the
hole and fasten it to the fish tank with
a 50mm rubber gasket and 50mm PVC
locknut on each side.
• Put thread tape around the ends of each
thread of the nipple and fasten a 63mm x
2” Adapter Socket (Female Thread) on each
side of the nipple.
• Take a 63mm PVC pipe and cut three
80mm long tubes with a circular saw.
• Fit the two tubes on each side of the two
adapters.
• Once done, on the outlet side, fit a 63mm
90° Slow Elbow facing downwards.
• On the inlet side, fit a 63mm Tee-Junction
facing 90˚ upwards to prevent floating
fish food or fish waste going through the
outlet.
• Insert the last tube into the T-Junction (see
diagram)
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