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Old 08-27-2009, 08:57 PM   #21 (permalink)
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Default Re: Project 178

Awesome Jason! You weren't kidding about the size of that tank! I can tell its super big compared to the stand!
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Old 08-27-2009, 09:18 PM   #22 (permalink)
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That's a big tank!



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Old 08-28-2009, 05:15 AM   #23 (permalink)
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Default Re: Project 178

HAHAH!! I know, its a monster. I really dont know where i am going to find wood and rock large enough to put in there!

foofooree - the hand is up to block the flash from reflecting off the tank.

jB
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Old 08-28-2009, 02:25 PM   #24 (permalink)
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Default Re: Project 178

Tom Barr had some huge manzanita pieces a few weeks ago, but shipping would be a lot.
lol, iwagumi would require huge rocks for this tank. It would be sweet though.
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Old 08-29-2009, 07:51 AM   #25 (permalink)
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Default Re: Project 178

Quote:
Originally Posted by foofooree View Post
Tom Barr had some huge manzanita pieces a few weeks ago, but shipping would be a lot.
lol, iwagumi would require huge rocks for this tank. It would be sweet though.
I think i am going to stay away from iwagumi on this one. Lifting 100lb rocks into this tank would be close to impossible!! Wood, well thats another story

jB
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Old 08-29-2009, 08:32 AM   #26 (permalink)
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Default Re: Project 178

Determining pendent height

I am hanging two 150W ADA Solar I's over this tank. The general rule is that 1 MH can spread about 24", but unfortunately I am right in the middle with the length of this tank. 2 lights might not be enough, but 3 will certainly be too much.

Before I build the light stand, I need to determine how high off the top of the tank I need to hang the lights. To do this, I held the pendent at different heights to see what kind of light spread I am going to get. You can see by these two pics that even 2 inches in height difference doesn't make that much of a difference lengthwise. Unfortunately, it does make a larger difference depthwise

Here are two pics of the experiment. The red dot marks the center and the blue dots are in 4" increments from the center.

10" height - about 12" of solid spread


12" height - about 15" of solid spread


I have determined I am going to start the lights at about 10" from the top of the tank and make the light stand a full 84" tall. I may lose full spread at the total top of the tank, but due to the depth of the tank I will sacrifice a little spread at the top for penetration to the bottom.

jB
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Old 08-29-2009, 06:21 PM   #27 (permalink)
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Default Re: Project 178

I'm going to defiantly be following this one, i love your work This is just a thought, but you may be able to use that lack of light spread at the top of your tank to your advantage? The plants would probably want to curve and grow toward the light, you might be able to use that for a nice hanging type effect, having the plants growing behind wood and sort of curving and "hanging" over top of it. Just a thought.... may not end up being a bad thing
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Old 08-29-2009, 06:48 PM   #28 (permalink)
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Default Re: Project 178

Have you ever been able to hang the lights from a microphone stand? It kind of looks like that's what you have in your px. We are looking for a unique way to hand Tex Guys light. He hates the bent conduit.



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Old 08-30-2009, 03:27 AM   #29 (permalink)
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Default Re: Project 178

you can use wardrobe rails if the tank situ is appropriate.

I use chains on S hooks. Not nasty looking chain. The nicer types that you use for decoration. Just make sure they are strong

AC
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Old 08-30-2009, 07:14 AM   #30 (permalink)
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Default Re: Project 178

TexGal - I have used mic stands for temp solutions, like holding extra light for photo shoots, but i dont think they would work out for permanent solutions. At that height they just dont feel sturdy, unless you buy some pretty expensive versions. If you wanted to go with conduit, they also sell elbows...
http://www.drillspot.com/pimages/1351/135138_300.jpg
...im not sure if they are any better looking though

MrSanders - I may not have a choice after its all said, but i am really excited to get these lights mounted and see what the actual outcome is

jB
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