Kloakk said:

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mushboy said:

maybe my decimal math is backwards but you would need a more accurate graph.

we are comparing 99.99 hepa vs the reduced airflow of ulpa not 99.97

and id assume most of us are not working in recirculated clean rooms.

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Yeah they have compiled all HEPA, but does it matter?

A HEPA 14 is 99.995% at 0,3μm
A ULPA is 99.999% at 0,12μm

The lifespan of HEPA is 8-10 years
The lifespan of ULPA is 5-8 years

So what I am asking, besides the fact that ULPA often is more expensive and don't have the same lifespan, is there other disadvantages, like will it reduce the lifespan of the fan as well? Would it restrict air so much that an cheap China FFU can't provide enough air ect?

I mean clearly, when it comes to clean air the ULPA seems superior, but I don't know shit about air filtration other then that I can grow drugs in them so that is why I am asking

max_thrust said:

Hey, thanks for the warm welcome!

I’ll check out the welcome thread later and say hi—thanks for the link.

I read through the whole thread and noticed that everyone’s happy about the switch from SAB to FFU, talking about what a nightmare it was to work with SAB—the awkward position, limited space, not being able to scratch your butt, etc. I’m an old, sick fart, and for my own comfort, a laminar flow hood seems like a better solution to me, but thanks for the suggestions.

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I am probably the exception to the rule but I used a SAB for years and its my belief that gave me a solid grounding in skills that I would not have achieved with a flow hood off the bat. Unless your trying to stack pounds you don't need a flowhood. If you are trying to stack pounds prepare for a steep learning curve. My coolest projects were all done with the SAB. Good luck

PuffM4gicDr4gon said:

Man I hate it when the Internet calls me poor

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Seriously though, just get a chinese FFU thingy, they work great.

Anomalocaris said:

You aint poor. You just dont want it bad enough

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Oh I'm definitely poor

PuffM4gicDr4gon said:

Amazon has FFUs right now for as cheap as I've seen them in a while. Almost $200 less than it was a year and a half ago.

I was just checking Facebook Marketplace and eBay to see what the options were in came across that one.

I always work by myself so there is no reason why I need 8 ft of Clean Air space. But damn do I want it. That thing is sexy as hell

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Yeah I totally understand that you didn't even consider getting that monster, I just though the internet telling you that you were poor was funny.

Mine is 2x4 and its really nice having room to do the work

bloodssonnew said:

Think il be happy with it?

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PuffM4gicDr4gon said:

Man I hate it when the Internet calls me poor

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It was a long wait (years) but eventually lightning struck (and then I almost lost it bc I was a dick to the guy, still feel bad about that to this day, one of my core "wince with regret as you fall asleep" memories). Many hours of night driving across the mountains and a lot of reassembly and repair, but it can happen. This was a bit before the proliferation of cheap FFUs, back when even a DIY 2x2 was probably gonna start around 750. Honestly I sometimes wish I'd waited just a bit longer, it's so much heavier and space-taking than the modern versions. The thought of moving back to the city and having to break down and haul that thing again... oof. Kloakk's type has the same legroom without being a 700lb floor-to-ceiling space hog.

If you do get one, I recommend at least 2x2 if you can swing it. I don't use the full 4ft ever (all the pics of my hood have random crap piling up at the edges, just like a desk). The ideal size IMO is 1.5x3 but nobody sells that.

For height, about 4 fists (1/2 stack 90mm or full stack 60mm + media bottle at pouring angle). Same thing for width, bottle + stack, space to shuffle it and pour another.

With 2x2 FFUs in the $300 range, if you're gonna spend $150 on a lil guy, it's really worth pullin a couple doubles or doin some handyman favors to close the gap. If I wanted to feel cramped and fight with a box I'd have stayed in the SAB.

(edit: bloodssonnew just saw yours and hell yeah, 2x2 ftw)

Can't recommend it enough though. Yes the SAB builds good fundamentals, but I have a complex about trappedness, so SAB also builds seething psychological resentment that make me never wanna do agar.

BTW kloakk that black shelf thing with the light is classy af. and with the wood? lovely.

PuffM4gicDr4gon said:

This is the one I'm thinking of getting:






Should I get a fan controller as well? It looks like the unit only has 3 settings itself.

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