I watched the video in the link. Looks good at first glance, but there must be at least 120 bubbles per minute going through that drop checker. My suspicion is that it needs that much to create enough pressure for the CO2 to break through the disc. Very similar to the problems with the UP Inline and JBL Inline diffusers.I find my ADA Beetle that I am using for the first time great, but at a price :/
Also these have great reviews, I have one to test when my diffusor is due a clean:
There are 3 sizes!
I would imagine that with a reduction in pressure this diffuser won't work as efficiently as it appears to do in the video. Or at a reduced bubble count, the pressure will build up slowly inside the diffuser then expend itself quickly in ine blast causing instabilities in CO2 levels in the tank.
I hope I'm wrong but would like to hear the results once tested.