My first attempt at this and with the hot weather we are having lately not a bad time to play with water.

At the top is a length of 90mm PVC pipe. Then left to right:

1. Assembled inlet side using a Stormwater Threaded Access Coupling with a Threaded Storm Cap screwed on, inside this are the shade mesh and scrubber pad filters.
2. Scrubber filters.
3. One of the shade mesh filters with its compression ring.
4. The outlet assembly, like the inlet but turned over to show the other side.
5. Threaded storm cap (with no outlet hole or nozzle) that screws onto…
6. Last but not least –  straws!

Shade mesh filters with compression rings.

Straws packed in

The completed unit ready for testing. Next to build is the low pass filter.

LPF: No need for threaded ends caps here so saved a bit of money and used the push on storm caps (with PVC glue). Inlet at bottom with outlet above this.

  
Chassis punch set – something that was a must to have many years ago if you were a electronics enthusiast constructing valve (vacuum tube) equipment. Assorted O rings are also handy.

That’s looks pretty good but I’ll take the front off and polish the brass ‘nozzle’ some more.

Can’t see the improvement in the picture but disturbance has been reduced.

Like most I started with just a drilled hole in the plastic with a countersink on the outside – awful results. The nozzle is the most critical component and I need to find something – but what?
A few days later while doing other stuff came across a cardboard box with old water fittings – that belonged to my dad – and in there found a brass screw-on hose fitting; like a threaded end cap with a fiber washer – hmm.
Used the bench drill to drill a hole as carefully as I could, then countersunk the outside edge and finished with polishing with emery paper.

Installed everything in a mini bin…

The main unit is clamped to a length of pine which is secured from the outside of the bin with a couple of roofing screws with the rubber washers providing good friction to hold the nozzle steady at any arc position.