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"(booster fan)" ???? "wrong" ???? OK...guess I just come around to bullshit people and f*ck up their grows. Duct booster fans are a joke. As a matter of fact, I have a nasty feeling they impede airflow more than they help. I'm talking about a 4" inline centrifugal fan...but I understand...

Just in case this helps anyone in the future...cutting the pin off close with a pair of dykes works wonders. Just make sure that what's left of it stops at the 9 o' clock position.

Well, R-22 refrigerant is already obsolete...for several years now. I didn't even know you could still purchase units that ran on it. Not that it REALLY matters...I can still get R-22 easily (and so can anybody with the proper EPA license), but most systems now run R-410A refrigerant. R-22...

No, I understand man. And thanks for the info. Saw the bulb today and sure as shit...there's a small "pin" sticking out of the base of the bulb that, I assume, rests in a groove in the socket...so I found the socket for it online and I'll let him know.

Wow....never saw a dual unit like that. Kinda had me confused the way you were wording things...but it all came together when I saw the picture...sweet-lookin set up. Yes...it'll operate fine. One of the compressors won't run, but it's seperate from the other (I think...there are individual...

MH400 Horizntal | ED37 | Warm DeluxeInitial Lumen Output: 38,000 Mean Life Hours: 20,000 Color Temperature: 3000 degrees Kelvin PAR Watts: 110 For use in horizontal 400 watt metal halide fixtures with position pin capable mogul socket.

Been doin the same thing for a while now...LOVE IT! But you're buying your E-Cig from the wrong spot man! Cheaper here... www.cignot.com Also...I use VG instead of PG...but same principle.

Just posted to your other thread...message me with any questions...sometimes I get lost :eyesmoke: What kinda warrantee did you get with that Heil unit?

Take those caps off with a crescent! You have the small liquid line schrader for attaching gauges to. Then, on the liquid assembly, you have your flare fitting (where your piping connects), and a stem valve. On the suction side, you have the flare fitting, a schrader valve, and a stem valve...

Yes, the small schrader valve in the middle is a liquid line port for attaching gauges. Make sure to insulate that suction line (some mini-splits require BOTH lines to be insulated...check your manual) with Armaflex AND GLUE YOUR JOINTS with Armaflex glue (or contact cement). Otherwise, it's...

Seriously? Not again....Seems like whenever I'm stumped so are the masses. Nobody using this bulb?

what happened to the grow FAQs?

Why outside air? Just curious.

Wondered when I was gonna start seein Mini Splits in grow rooms! I've been putting them in schools for years now...and yes, they are the cat's meow. Just DON'T BUY UNIONAIRE! I have never, in my life, experienced such piles of trash. Design flaws abound on those babies. If you can afford a...

400w MH, remote ballast, 4" Active Air Inline Fan (ECO5600) Also might add that he used a 12" Oscillating fan (powered on when exhaust was on) aimed between the light and plant tops. Don't have a pre-fan temp really....installed the fan as I built his room. I CAN tell you that the hidden latch...

No...there's something about a "position pin" involved here. Seems I recall the pin needing to rest at the 9 o' clock position... http://www.homeharvest.com/metalhalidebulbs.htm I'm not promoting this supplier...just had the info real quick....I've actually never purchased from them. The...

I beg to differ...last room I did was 2x8x8...174 CFM fan kept it just under 80

Chimneys are good for exhaust...that's about it. knock a hole in the brick big enough that you can attach an upward-facing 90deg elbow to your pipe and stub it in there. a screen on the opening never hurts. also, use a backdraft damper near your fan's outlet. birds and squirrels love dying...

fan speed controls are available at ANY electrical supply house for 20 bucks or less. be ready to choose between 3 amp and 6 amp. and 400 cfm is WAY more than plenty for that small of a space. a good way to figure fan requirements: take your room's cubic feet and divide by 3. this will give...

Nope. window units recirculate the inside air (unless you make it exhaust). air is taken in through the filter behind the face of the unit, passes through a freon-cooled coil, then out the supply openings. outside air is only used to cool the condensing coil (the one that gets hot outside)...