In this video https://rumble.com/vdms55-deeper-into-the-magic-world-of-soap-bubbles-fun-and-usage.html?mref=b6r65&mc=a81cq I showed a clip from a girl using a simple way to produce soap bubble foam. Today I did it myself and it worked!
The latter part shows how I level off the surface of back-filled drainage rocks by filling the pond with water – use the level of water as a gauge as to where more rocks are needed. And then I placed some potted plants on top of the rocks with a shalow depth of water underneath – the simplest form of self-watering mimicking water transpiration in plants.
