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-   -   150W HPS for Tomato Plant (http://www.hydroponicsonline.com/forums/showthread.php?t=1900)

Rkfm 02-06-2011 11:52 AM

150W HPS for Tomato Plant
 
My local hydro store has a sale on Sun System 150W HPS lamps ($30) and I was thinking of getting 4. If I arranged them in a square pattern, would that be enough light for a 3 foot tall determinate tomato plant? Would the bottom not be getting enough lumens? I would think keeping the lights a foot away from the top of the plant would keep it from getting too warm.

Or, should I just go for a 400W for a little more? ($150)

frnz571 02-06-2011 01:12 PM

i would think a 150 watt is not enough. i did ok with a 400 watt for 3 foot plants.now i have a 1000 watt light w/ 4 plants under them almost 4 ft high.

ProZachJ 03-18-2011 02:17 PM

The main issue with tomatoes indoors is the vertical nature of the plants. This makes it difficult with any light source. If you find a way to trellis horizontally or get bush variety tomatoes it will help greatly. I once did a SCROG type grow with Roma tomatoes under a 345W LED light that produced about 20 2-3oz fruits per plant.

local 06-18-2011 07:05 PM

Quote:

Originally Posted by Rkfm (Post 6533)
If I arranged them in a square pattern, would that be enough light for a 3 foot tall determinate tomato plant?

Yes.
Quote:

Originally Posted by Rkfm (Post 6533)
Would the bottom not be getting enough lumens?

No. For the lower leaves add CFL lamps http://www.grainger.com/Grainger/LUM...ent-Lamp-5MPW8
Quote:

Originally Posted by Rkfm (Post 6533)
I would think keeping the lights a foot away from the top of the plant would keep it from getting too warm.

YES. HPS bulb temperature 400C 150W HPS
Best wishes!


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