Aqua-Link ADP J-tube diffuser return line hook (Kits) are made of; durable break resistant Chlorinated Polyvinyl Chloride. The Gentle 180 degree molded J-shape enables greater water flow, without the restrictions found in other brands that use multiple 90 degree bends.
These molded J-tubes each have a long inside leg length 4.625” and a short inside leg length 1.75” .
Aqua-Link J-tubes are available in 3 standard diameter reaches to accommodate multiple aquarium frame widths.
However Custom sizes can be quoted upon request**
(3 standard diameter reach sizes)
1-3/8” (Most used)
1-7/8”
2-3/8”
Advanced Return line kits, will include a back flush siphon break feature designed to disrupt a reverse siphon, preventing excess water from back flushing into your sump in the event of a power failure. This feature allows you to extend the return line deeper into the aquarium providing better water circulation in hard to reach areas without using additional power heads
This feature is also adjustable to re-direct back pressure into the aquarium preventing misdirected back spray inside the aquarium hood.
The advanced kits come with tight fitting, adjustable nozzle parts so desired directional flow can be achieved. Flat diffuser nozzle tip(s) are included with all “Advanced Kits”. These nozzles are designed to spread water out over a broader area for more efficient water circulation. Adjustable "Duck Bill" nozzle tips can be rotated to direct this flat array where you desire. Although not required, these nozzle parts are able to be permanently glued if needed or desired.