What would my light intensity be at substrate.

[Caliban07]

18" deep 2 x T5HO 35W each
Thanks


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[Fresh2o]

I found a PAR graph for various fixtures in this link and perhaps the fixture or something similar is listed here:

The ranges in PAR I use are:
Low 10-30
Med 30-80
High 80+


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[Brookster123]

Depending on the bulbs you'll be around 35-50 par. I'd go with the daylight/full spectrum tubes and you should be perfect low/med light which is excellent for your setup!

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[Caliban07]

Wow thanks to both I feel better now. Other charts is seen had me at high/high medium. The tubes that come with the fixture are daylight so it's perfect.

Cheers


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[Caliban07]

What would you say I'm at now?

2 x T8 bulbs at 25W each 18 inch?


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[Brookster123]

15-20? Not sure really, couldn't find values in a pinch.

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