1. Presented By: Aaron Goodwin Mike Pyrkosz April 15, 2004 Aquarium Wave Generator Project # 589-04A

2. Water movement is one of the most important requirements for coral health 90 gallon tank shown

3. Water movement is important Most are sessile animals (attached to rocks) Moves food past them for capture Removes waste and allows respiration to occur Photosynthesis and calcification rates increase

4. Basic Design Rotational Diverting Valve Single inlet Alternating outlets Low geared motor drive Single pump allowed to run continuously

5. Plumbing Schematic Pump Outlet (2 Places) Magnetic Drive Pump Diverting Valve Pump Intake

6. Design Revisions Simplify Machining User Friendly –O-ring seal –Disassembly for cleaning Adjustable Motor Speed/Mounting Ease of Installation

7. Technical Analysis O-ring Selection Flow Energy losses – Pump-Outlet Removable Submerged Jet Manifolds (Spray Bars)

8. Test Plan Visual Flow Indicators: (Streamers, Neutrally buoyant dyes, etc.) Measure In-tank Flow Velocity Submerged Jet Manifold Location Measure Noise Level

9. Problems? Possible O-Ring Failure Gaps around Cylinder at closed position Verify theoretical Concept

10. Progress to Date Actual 2/28/04 3/16/04 4/5/04 In progress Project Phase Prototype Design Material Acquisition Fabrication (revised) Testing (revised) Schedule 1/15/04 1/30/04 3/22/04 3/27/04

11. Budget Original Estimate: $1,315 Current Expenditures: $1,484 Amount Over: $ 169 Cost of Production Model: $ 2

12. Question?