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

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

3. Water movement is important Corals 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. Selected Design Rotational Diverting Valve Single inlet Alternating outlets Low geared motor drive Single pump allowed to run continuously

5. Design Revisions Simplify machining Reduce material cost User friendly –O-ring seal –Disassembly for cleaning Adjustable motor mounting plate

6. Design Revisions Variable speed controller – For prototype model only Ease of installation

7. Technical Analysis O-ring selection EPDM selected for saltwater Estimated flow to be 18 gpm ( 6 ft of head loss) Fittings selected and sized for reduced losses Removable submerged jet manifolds Area in = Area out

8. Test Tank 120 gallon aquarium dimensions: 23”h x 18’d x 72”lg

9. Test Tank Submerged jet manifold plumbing

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

11. Test Tank Back of overflow box Blueline HD 70 pump (above)

12. Test Plan Visual flow indicators: streamers, neutrally buoyant dyes Estimate in-tank flow velocity Submerged jet manifold location Check noise level

13. Potential Problems Possible o-ring failure Gaps around cylinder at closed position Verify theoretical concept Valve body is bulky

14. 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

15. Budget Original estimate: $1,315 Current expenditures: $1,484 Amount over: $ 169 Cost of production model: Materials $50 + 5 hours labor

16. Questions?