Hi Richard,
Is this THE Richard White? In any event, welcome to the forum from another Oz resident.
My vertical washer only goes up to 12x16 so for 16x20 I use a Kodak tray siphon that I recently liberated from the USA to the free world via Ebay. They crop up there regularly at a reasonable price if you keep your eyes open. Alternatively, try posting a "wanted to buy" add here in the classified section of this site.
The tray siphon works a charm but does use a fair bit of water.
Cheers
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