Coolstack vs CL GH PRo 340 Greenhouse Ligths

carlo987

Active Member
Has anyone tried the the coolstacks or California lightworks GH PRO 340?


 

bk78

Well-Known Member
Both are meant to be hung at heights, and both are very old tech, and both are very overpriced.

What are you growing in?
 

carlo987

Active Member
I'm planning a solar passive greenhouse and need some additional light (only LED) that I can hang quite high. Efficiencies of over 3 umol/J seem quite up to date to me. Are you talking about the LEDs used? Please, I'm happy to hear any recommendations. Ideally 900 umol/m2/s reaching the canopy from a 1,8m/6' would be my dream. The CL GH PRO are rated at 900 umols but I believe that might be at 18" max.
I still have about 9-12 months before making the buy. I'm currently in the planning and budgeting stage. So maybe by then efficiencies will be up to 4 umol/J, where it will be much easier.
 

bk78

Well-Known Member
I'm planning a solar passive greenhouse and need some additional light (only LED) that I can hang quite high. Efficiencies of over 3 umol/J seem quite up to date to me. Are you talking about the LEDs used? Please, I'm happy to hear any recommendations. Ideally 900 umol/m2/s reaching the canopy from a 1,8m/6' would be my dream. The CL GH PRO are rated at 900 umols but I believe that might be at 18" max.
I still have about 9-12 months before making the buy. I'm currently in the planning and budgeting stage. So maybe by then efficiencies will be up to 4 umol/J, where it will be much easier.
Maybe just wait a year then until your project is complete. CLW hasnt come out with any new tech in years, as for the other I’ve never heard of it myself.

I highly doubt either is pulling 3 umol/j
 
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