Hello 87_botanist,
Your air scrubber looks awesome. I'm in the same position regarding building a laminar flow hood and have been looking at a few DIY designs since freight to rural WA is especially pricey. I want to build something modular where I can replace the pre-filter and hepa filter. Do you know what size filter you'd ideally use?
It'd be cool to find out how soma_seeker's design worked out and whether anything should be changed with the next build.