Grow Room advice for High Pressure Sodium

With HPS bulb you need reflector, because light angle is 360°.
Or do vertical grow - place plants around HPS.
 
What do you think about this bulbs? From China, It looks cheap and good color temperature and lumens

https://wholesaler.alibaba.com/prod...60453956838.html?spm=a2700.7724857.0.0.w9k72K

Not so good i think. If youre going corn cob, you should get one of the half corn ones unless youre going to hang these down around your plants...

BUT.

If you already have a starter of some sort for a lamp, instead get one of these Russian lamps, which come with a special turnable socket and a reflector painted inside:

http://www.lamptech.co.uk/Spec Sheets/D SHP Reflux.htm

http://www.ebay.com/itm/NEW-Reflect...400W-250W-150W-100W-DNaZ-ReFlux-/271761809969
 
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