good deal on hepa?

[normalbc]

Is this a good deal? just under a 100 shipped. what size blower would you use? thanks for the help, i am still going for that flow hood for under 150.

[highflyer]

It would be a good deal if the following things hold true...

It is a new filter. Used filters will be clogged with plenty of dust, spores, hair, ect. These things will cut down on the amount of airflow that will be able to make it through the filter. This would give you a depressed amount of air coming through the filter and make it so you would have to do all your work much closer to the filter. It would also greatly depress the lifespan of the filter.

Further...the size of the filter should depend on the type of work that you plan on doing in front of the filter. This size would work well for inoculations, agar, and g2g's, but it would not work so well if you plan on working with bags. You will need to know what type of work you plan on doing with this filter and for what length of time.

If you plan on using this filter for a short amount of time, to learn proper techniques, then it should suffice. If you want a long term hood, then you should go with a 36x24 at a minimum. Bags are eventually where many end up at, and you will need the larger filter....the 48x24 would be optimum.

So consider your objectives before making the hood purchase.

I would use a blower in the range of 800-1200 CFM.

[normalbc]

its new, i was getting it for agar and grain to grain. i dont see how i would use it for bags, but i have never really made my own, so would not know. thanks for the response.

[highflyer]

Bags are not the only thing a larger hood is useful for.

That size filter may suffice for transfers of 5-7 jars at a time.

There will come a time when that will not be sufficient for your needs.

I would always suggest spending the extra money for a larger hood if you have the space.

[normalbc]

while i thought i was pushing it with 24x24, i would like to do multiple jars at the same time, should i go 12x48 or would that the too short? i dont have the space for a 48X24, i should only build a 12x24 but 24x24 sounds better? can i have some hepa filter brands to try to find some good deal on a little bigger one. all i could find was flanders. i would also like it to be more in the 6 inch deep range 12 seems a little much.

[highflyer]

I would always suggest the largest that you have space for within your current living situation.

The first one I made was 12x24. It lasted me about 3 months before I realized that it would not meet my needs once I gained experience.

24x24 will allow you to do multiple jars at the same time. Just not several pressure cookers full. But that size should allow you to get a firm hold of your needs with the growing style that works best for your situation. You can always upgrade in the future if you find that you need more work area in your clean room.

Also, the depth of your completed unit will be much thicker than the depth of the filter itsself. Always expect an additional 6-8 inches behind the hepa filter to allow room for the air coming in from your blower. Fungi Perfecti usually has good pictures of units...and im sure people could post more pics on completed units here with actual sizes once they are finished.

http://fungiperfecti.com/tools/airfilters.html

[hyphaenation]

Have you seen this thread ?

http://forums.mycotopia.net/glovebox...flow-hood.html (How to build a "mondo ghetto" laminar flow hood.)

[highflyer]

I havent but without even reading the thread, the pics show me it defeats the whole purpose of a laminar flow.

[hyphaenation]

I havent but without even reading the thread, the pics show me it defeats the whole purpose of a laminar flow.

Care to explain how you come to that conclusion ? ... I'm curious.

[highflyer]

Here is a really crude picture of what I am talking about.

That thread is basically a glovebox with a hepa filter that introduces air. That defeats the purpose of both a glovebox and a flowhood.

A glovebox should allow you a still air environment to work in.

A flowhood should force any contaminants to blow outside of the working area.

The device in that thread doesnt allow bad contaminants that are being introduced by the blower to escape the working area. It also kicks up any contaminants inside of the box to be kicked up right into your working area.

As I inartfully drew in the pic, the box would kick contaminants off of the back of the box right back into your working area instead of taking them away from your working surface like a true laminar flow hood would do.

[highflyer]

And Im kinda drunk, so if you need any more clarification, I would be glad to assist.

[hyphaenation]

Drunk people usually know best

[normalbc]

ya i was thinking that but hip seemed to approve so i stayed away at poking at the idea of a mondo flowhood glovebox, seemed to not be the way to go.

[highflyer]

Look up the definition of a laminar flow.

It would describe a flow out of a filter that is even. It would go away from the work surface as described in red...never to come back. The contaminants would be blown into the room.

The box in that thread would kick back up any contaminants in the chamber, allowing for a much greater chance to enter into your work. It is a closed chamber...basically a glovebox. It is NEVER a good idea to have an airflow into a glovebox. Even if it is hepa filtered air.

[highflyer]

Hips mental acuity may be slowing now that he is turning 50

[Lazlo]

I have a 2x2 filter from the same company that's nearly exact. It's a great filter. I have a 1100cfm air conditioning blower running into it on medium power with a http://www.littlegreenhouse.com/acce...ontrols2.shtml controlling the flow. I had a small rig similar to the one mentioned above and it worked o.k. for tiny projects, but is a piece of shit compared to the laminar flow hood. Build something worth while for your money. Same costs, better product.

[normalbc]

ya ill probably go for the 24X24. does 12 inchs sound too much or does someone else know of a 24x24 with arroud the same price about half as thick. seeing as if i get a 6 inch deep filter i could put another 6 inchs onto the back and it would be only around 12 inches deep all together.

going with the 12 deep would leave me with arround 19-20 inches deep, a little big for me seeing as the filter head is 2x2 anyways.

still looking for a cheap blower -salvagedhvac- and cheap fan speed controller -coughlightdimmercough-

[normalbc]

i got the guy to sell me 2 for 100 shipped to my house. should i accept? does anyone need a 24x24 inch hepa filter willing to go half and half with me? a 24x24x12 for 50+actual shipping sounds like a real good deal to me. anyone?

[Lazlo]

I can't recall how much mine was, but it certainly wasn't that cheap. I believe it was $60 plus shipping costs.

I don't know what to tell you on the buy both or not to thing, that's up to you. But I would be inclined to buy 1 if I only planned on using 1. No sense in spending more than you need to and having the hassles of wheeling and dealing the other.

[sandman]

I would order one from fungi perfecti to avoid any questions on if its right or not. You'll pay more but you want the right kin do f filter and there are hundreds of variables from the way the pleat is laid and seperated and various other things. You want one with alluminum (or metal) seperators for sure. No minipleats or any of that stuff.

A 5 7/8" filter is a much better choice by far. Having the flowhood take up all your table space sucks.

[Lazlo]

I'm nearly 100% sure that filter can be used for laminar flow. I'm pretty sure all of their 11 5/8" nuclear's can be.

The filter is a lot bigger than you think! So keep that in mind. The best thing to do is to make the unit a piece of furniture for work. A desk type rig. Flowhoods are easy to build.

[normalbc]

while if i could find a 6 incher for under a 100 shipped to my house than i would call it a deal sandman, but i am under budget and not looking break the piggy. yes this will be a piece of furniture i don't think the extra 6 inched will matter the world but its just piece of mind.

[Lazlo]

There's a guy on ebay, (samsgreat I believe his name is), that specializes in blowers. There's a couple of posts here where a few of us had mentioned buying our blowers from him, but I can't find them. I'm pretty sure his ebay name is samsgreat though.

Maybe someone can find out for to be sure. I'm terrible when it comes to searches.

[hyphaenation]

Possibly ... ?

http://forums.mycotopia.net/holding-...-flowhood.html

... http://stores.ebay.com/THE-SQUIRREL-CAGE-BLOWER-STORE

[normalbc]

samgreat is not selling blowers anymore, i emailed him with hopes of some response. anyone else, or someone who has one on the cheap.

that guy on that thread got that filter for 65 shipped 24x48. wish i got that deal!