Parabolic Reflectors Please Tell Me What You Think

Ok here we go. (by the way im a 5 right now on the high scale but am slowly asending to ten as I write this)

i already bought this just waiting for it to ship. Its a 3 ft parabolic reflector where the bulb is install vertically.

Do these things do well? I hope so I did parcially by it cuz it looked cool

please tell me you opinions guys because they are valued. Also there is no thread dealing with parabolic type reflectors. Thanks

I hope you want an honest answer.

Jorge in the new dvd says this is the least effective and try to avoid it.

Horzinal is better and the one you got will work. I had to make mine out of wood and yours is bettre than mine I think. Mine works to.

I'm learning all mine the hard way to. I think it's the pot head way.

Moon Shadow said:

I hope you want an honest answer.

Jorge in the new dvd says this is the least effective and try to avoid it.

Horzinal is better and the one you got will work. I had to make mine out of wood and yours is bettre than mine I think. Mine works to.

I'm learning all mine the hard way to. I think it's the pot head way.

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so you made yourself a parabolic reflector out of wood? you should post pics. Funny this is that its out of stock where I orderedit from so he offered me the Heat Buster reflector instead. should I get that instead?

Here it is below:

I built the heat buster out of wood. The heat buster is better much better.

I'm new to the whole seen so wait for one of the pro's to answer your post.

My reply was only an echo of what I have read or watched.

Jorge Cervantes is one of the leaders and I just watched one of his new DVD movies and that hood was in it.

The heat buster is very popular on this forum go look at some of the grow journals

Don't nobody know about these thngs, shit I wanna know too!

Damnit, I tried reading your post but my eyes keep drifting off to your avatar.

I just quickly watched that part when his talking about reflective hoods. He said - its not the most effective hood, but spreads light very evenly and is an excellent reflector for veg growth.

I love that DVD definitely worth the download if your a newbie or even for the intermediate who just want quick refresher course on things.

which of the two reflectors are you talking about the parabolic reflector?

what about the other one?

He said this about the parabolic reflector.

Which other reflector are you talking about there was The Cone, Bat Wing and a few others. But the Bat wing seemed to be the one he liked and favoured.

nevermind dude I'm high and don't know what fuck I was talking about and in the process of cleaning my pipe so I just got confused somehow don't ask me how just one of those pothead moments

If you still can get the heat buster. Horizontal distributes the light better then vertical. Either way atleast you have a descent light and your on your way..........so good luck

You need the heat buster and if you live in the south I don't think you can grow without the heat buster unless your grow room has an a/c unit in it

After the outside air warmed up it shut me down. Get the heat buster

reflecter burn down ur house dont grow marawanna dumb ass

Never mind him he's a drunk 12 year old pissed at his dad for smoking pot getting drunk and fucking his neinbor's wife

Thanks guys, they are sending me the heat buster. And yes my room is very hot 84 - 86 deg F. been running the light at night but I hope the heat buster helps.

Does anyone know the best placment of my exhaust fan duct to extract the heat. I guess I could attach it to the top of the heat buster??

DAMN this little hindicapped kid is on every thread. LOL

Good luck growing your mariwanna....LMAO

pandabear said:

please tell me you opinions guys because they are valued. Also there is no thread dealing with parabolic type reflectors. Thanks

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Hiya Pandabear

Firstly, I've never used one, (and have no intention of ever using one either) so I can't comment from personal experience of them. Secondly, it all depends on what you're looking for from a reflector - people look for different things.

I know of highly experienced and extremely competent growers who swear by parabolic reflectors, but I suspect that's primarily because of two very specific reasons 1) they like the very even light distribution parabolic reflectors give and 2) they're already using the most efficient indoor light on the planet - a 600w HPS and so actual lumen outputs is less of a concern to them that evenly lighting a large and wide area.

So there you have it basically - vertical parabolics are excellent at even light distribution over a wide area but not so good at actual light intensity reflection - ie you lose more lumens with a vertical parabolic than you will with a horizontal bulb and reflector.

This makes plenty of sense if you think about it - a vertically mounted bulb has far less surface area to actually project light downwards - in fact you're really only talking about the very end of the bulb - the rest of the light is emitted from the sides of bulb and reflected downwards from the sides of the reflector - hence the reason for good overall light distribution, (the parabolic reflector is a large surface area to reflect from) but reduced lumen intensity due to the high percentage of reflected light. The further light has to travel to it's subject (particularly reflected light) the less intense it is when it arrives.

Horizontally mounted bulbs in horizontal reflectors are far more efficient in terms of the light intensity they project, (no wonder, they're using the whole 'half' of a bulb to emit light down from) but at an expense of area coverage - horizontal reflectors are less efficient at light distribution than vertical parabolics. Personally I think the Adjust a wing reflectors with heat shield are probably the most efficient non-air cooled reflectors on the market.

Forget cool tubes, they really are a waste of space - only good for when heat build up is a real problem - their light distribution from the pathetic internal reflector really is extremely poor and the lower people use them on the tops of their plants the worse the light distribution gets - yet supposedly sane people still use them. Way beyond my comprehension.

pandabear said:

Does anyone know the best placment of my exhaust fan duct to extract the heat. I guess I could attach it to the top of the heat buster??

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I think most people use them like this -

Carbon filter > ducting > air cooled hood > ducting > exhaust fan.

You can have the fan pulling air from the grow room like that whilst using a carbon filter and air cooled hood.

yeah they loose a lot of light thats why they say they are a good veg light they do spread light evenly but they loose a lot out the sides