This is the 252 W CFL version running 6 x 42W @ 100 W/Sqft. There is a 80mm 38CFM cooling the lights with a 100mm 65CFM fan in the scrubber that passes about 10-15 CFM
Here's the 150 HPS upgrade with no mod's to the ventilation. It runs 1* C above ambient as well.
Hey Blynx, grab a beer from the fridge and find yourself a spot on the comfy couch by the woodstove.
On my last grow with the 150 HPS, the plants showed the same traits as other plants that I grew under the CFL's. I got about the same yeild and quality from both light systems.
The only think I could see different was there was less foliage growth with the HPS. I modified my cabinet to use two 42W along with the 150HPS but was unable to finish the grow. The plants looked great but were only in 12/12 for a week or so.
Here's my LUI, Thai Lights, Shiskaberry and Dutch Treat seedlings. I don't know what happened to my green thumb lately. The last three grows, I've had nothing but problems getting the seedlings going.
On this grow, I made a light soil mix with 2 parts MG soil and 2 parts Perlite in peat cups. I was too agressive and stuck them in my grow box with too much light and too much ventilation. They started coming around then got worse. I transplanted them into the beercups with my old soil recipe using 2 parts Peat Moss, 1 part Vermiculite, 1 part Perlite, dolomite lime, blood and bone meal.
I moved them a bit lower from the light and have them on a 18/6 schedule. They seem to be coming around now.