Hi Paul do you have any ballpark figures to add to those items ?

Approximately: Pump, R 1600 (Speck Magic), Sandfilter R 1200, Sand R 200, UV R 500, Bottom drain R 250, Ultrazap filter R 500, Venturis x 2 R 200.00, Bioballs R 300.00, Piping R 250 TOTAL: R 5000

A question was asked what the difference is between the Speck Magic and Speck Porpoise pumps. In my opinion the following:

The Speck Magic is more expensive (R 1600) but uses less electricity because it comes in a 0.25 watt version and delivers R 10 000 liters / hour which is ideal for a koi pond up to 15 000 liters.
25 watts/1000 liters

The smallest Speck Porpoise comes in 0.45 (almost twice as much electricity) and delivers 15 000 liters / hour. They are cheaper at R 1200.00.
30 watts/1000 liters

Any other views?