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OfflineJrsxt

Registered: 04/21/08
Posts: 134
Last seen: 4 months, 10 days
CFL Reflector
    #74362 - 07/07/08 01:07 AM (8 years, 4 months ago)

I'm trying to make a better CFL reflector. It seems mine is really a piece of shit. Anybody got any good ideas on how to make a better one?


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OfflineJrsxt

Registered: 04/21/08
Posts: 134
Last seen: 4 months, 10 days
Re: CFL Reflector [Re: Jrsxt]
    #76668 - 07/09/08 12:21 PM (8 years, 4 months ago)

Anybody?


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InvisibleUns4ne
King of Twisted Irony
 User Gallery


Folding@home Statistics
Registered: 04/21/08
Posts: 343
Re: CFL Reflector [Re: Jrsxt]
    #76770 - 07/09/08 01:28 PM (8 years, 4 months ago)

I hear soda cans, cut open work well.


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OfflineBlargIAmDead


Registered: 06/01/08
Posts: 266
Last seen: 7 years, 9 months
Re: CFL Reflector [Re: Uns4ne]
    #77007 - 07/09/08 06:21 PM (8 years, 4 months ago)

I'm gonna say poster board and mylar and then head on back to 3rd grade when we all made dioramas/history fair projects/science fair projects/whatever and get to gluing :smile:.


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Invisiblecaptain.koons
Failed Botanist
Registered: 06/25/08
Posts: 6,163
Trusted Cultivator
Re: CFL Reflector [Re: Uns4ne]
    #77038 - 07/09/08 07:43 PM (8 years, 4 months ago)

Quote:

Uns4ne said:
I hear soda cans, cut open work well.




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OfflineSirius
Saturn Ascends


Registered: 04/20/08
Posts: 1,540
Loc: The Milky Way
Last seen: 7 months, 17 days
Trusted Cultivator
Re: CFL Reflector [Re: BlargIAmDead]
    #77974 - 07/10/08 05:19 AM (8 years, 4 months ago)

Quote:

BlargIAmDead said:
I'm gonna say poster board and mylar




Good idea. :super:


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OfflineEleutherios

Registered: 07/06/08
Posts: 76
Last seen: 5 years, 7 months
Re: CFL Reflector [Re: Sirius]
    #78940 - 07/11/08 01:17 AM (8 years, 4 months ago)

Quote:

Sirius said:
Quote:

BlargIAmDead said:
I'm gonna say poster board and mylar




Good idea. :super:




Speaking of which, is the really expensive stuff that much better than the expensive stuff, or the cheap liner? I mean Obviously it reflects more light, but is lets say 5%that much? 3%? I mean if you can obtain 97% efficiantcy for $80 & 100% for $102, is that $22 well spent?


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OfflineSirius
Saturn Ascends


Registered: 04/20/08
Posts: 1,540
Loc: The Milky Way
Last seen: 7 months, 17 days
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Re: CFL Reflector [Re: Eleutherios]
    #78996 - 07/11/08 05:01 AM (8 years, 4 months ago)

Great questions; this is why I personally went with just panda film for the grow room instead of mylar. :wink:

Of course, when you're building a simple reflector for a CFL, the expense of getting mylar should be minuscule. The difference will only really add up when you're buying a couple rolls that are meters wide and many more meters long. :grin:


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Invisiblecaptain.koons
Failed Botanist
Registered: 06/25/08
Posts: 6,163
Trusted Cultivator
Re: CFL Reflector [Re: Eleutherios]
    #79029 - 07/11/08 09:52 AM (8 years, 4 months ago)

Quote:

Eleutherios said:
Quote:

Sirius said:
Quote:

BlargIAmDead said:
I'm gonna say poster board and mylar




Good idea. :super:




Speaking of which, is the really expensive stuff that much better than the expensive stuff, or the cheap liner? I mean Obviously it reflects more light, but is lets say 5%that much? 3%? I mean if you can obtain 97% efficiantcy for $80 & 100% for $102, is that $22 well spent?




it's not even 3-5% or whatever it's a fraction of what you think it is because light is lost on the reflector, it loses intensity by 50% every 12 inches and only so much needs to be sent back from the walls.


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TROLLS NEED LOVE TOO!


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OfflineSirius
Saturn Ascends


Registered: 04/20/08
Posts: 1,540
Loc: The Milky Way
Last seen: 7 months, 17 days
Trusted Cultivator
Re: CFL Reflector [Re: captain.koons]
    #79063 - 07/11/08 11:13 AM (8 years, 4 months ago)

He's talking about the percentage difference in the reflectivity of one material compared to another.


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Invisiblecaptain.koons
Failed Botanist
Registered: 06/25/08
Posts: 6,163
Trusted Cultivator
Re: CFL Reflector [Re: Sirius]
    #79090 - 07/11/08 12:38 PM (8 years, 4 months ago)

I know I'm just emphasizing that it doesn't even matter as much as the percent.

The difference between flat white and mylar is nearly unnoticeable.


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OfflineEleutherios

Registered: 07/06/08
Posts: 76
Last seen: 5 years, 7 months
Re: CFL Reflector [Re: captain.koons]
    #79269 - 07/11/08 02:39 PM (8 years, 4 months ago)

So this is even true for the walls of the grow area? Would CO2 enrichment make any difference? I mean since the CO2 would give the plant the ability to use more light. Lets say you were running a 250watt hps in a chamber of slightly less than 6 square feet, would mylar coating that is 97% reflective keep enough extra light in play to make a significant difference? If flat white is comparable, I'm sure I wouldn't mind saving some money. Does anyone have a rebuttal to this?


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Invisiblecaptain.koons
Failed Botanist
Registered: 06/25/08
Posts: 6,163
Trusted Cultivator
Re: CFL Reflector [Re: Eleutherios]
    #79284 - 07/11/08 02:58 PM (8 years, 4 months ago)

I hear if you have adequate circulation and maintain at least the same ppm co2 as your nutrients you will get 20-25% yield increase.

This would mean your co2 travels across the grow room before being exhausted with plenty of turbulance between (osilating fans)

20-25% seems high to me but many people swear by it, a ton of people say they get double the yield (obv a exaggeration but people wouldn't make such claims if they weren't happy)


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TROLLS NEED LOVE TOO!


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