Photograph bubbles in a tank 

What I like about your instructional videos are you break each component down into steps. From concept to finish

I have watched several of your videos and thoroughly enjoyed each of them. However, I think that this one confirms you as the Heston Blumenthal of photography. Well done.

Brilliant! I'm sure your beautiful assistant moved during filming! Really concise clear instructions.

You are an excellent teacher. Thank you 👏

Great job and thanks for sharing

Great one really enjoyed that.

Excellent idea thank you for sharing

Great show as usual prof

This is phenomenal!

Amazing, what can be achieved with a creative bit of deception!

In a fish tank, upside down! Why make it easy 😂. Great!

My dear fellow, at the start after briefly describing your venture, you promised: "I am going to do the whole thing, in a fish-tank, upside down". However I was sorely disappointed to note that not only were you stood right side up throughout, you were certainly NOT in the fish tank.