The first generation CAD Lights PLS-100 Pipeless Protein Skimmer was innovative in its own right, but it suffered from finicky water level adjustment, which was accomplished by manually twisting the entire skimmer body to open/close drain holes located at the bottom of the reaction body.

The PLS-400 geared water level system

The second generation CAD Lights Pipeless Protein Skimmer addresses this design issue by using gears (yes, gears!).  These gears allow precise 1/16″ adjustments.  Furthermore, the second generation Pipeless Skimmers feature a locking system so once users have their water level dialed in, they can lock the gears in place to prevent accidental movement.  The new, larger gen two Pipeless also employ cone bodies unlike the cylindrical first generation Pipeless.  Furthermore, the PLS-400 is so tightly sealed that this 28″ tall skimmer can operate in a mere three inches of water.  All these improvements represent a very impressive evolution of this technology.

Features of the new CAD Lights 300G and 400G Pipeless Skimmers include:

• CAD Lights patented Pipeless design
• Patented Multi locking system and tension control
• Full interlocking gear control system (Gear control column)
• Built in baffles that returns the water 3/4″ from the bottom with true zero-micro-bubble discharge
• Completely silent and vibration-less

Model: PLS-300

• Dimensions: 10 x 8 x 22.5.
• Patent Pending CAD Lights Pipeless technology
• Aquarium Capacity: 180G-320G
• Power consumption: 35W
• GPH: 475GPH
• Noise emissions: 7dB Over audible sound
• Locking system: (Patent Pending) Single Tension Lock (Red Flower Knob)
• Operational water level: Min. 4.5″, Max. 14″, Optimal 8″

Model: PLS-400

• Dimensions: 11″ x 9″ x 28″
• Patent Pending CAD Lights Pipeless technology
• Aquarium Capacity: 250G-430G
• Power Consumption: 38W
• GPH: 720GPH
• Noise emissions: 7dB over audible sound
• Locking system: (Patent Pending) Single Tension Lock (Red Flower Knob), Secondary Gear Lock, Triple minor Rolling Locks
• Operational water level: Min. 3″ Max. 17″, Optimal 12″