Thanks for reply... the white tail should be facing down or upward to the top of soil?
EDIT: which do u rather to use 1,000w or 600w HPS for 1 plant project? I have been told 1,000w would be overkill for just 1 lonely plant and would be better off for 4 or 5 plants at once which I hope eventually I will do that but for now I just want to learn by using 1 plant.
If you keep your lighting at the right height, a 600w will be just as good as a 1,000w as far as photosynthesis is concerned. It's more a matter of footprint - or how big of an area needs to be effectively covered.
For example, and this is all just rough figures:
A 600w 18" above a plant will emit enough photosynthetically reactive radiation (PAR) to just about equal equatorial sunshine over a 3'x3' area. A 1,000w 21" above a plant will also emit enough PAR to just about equal equatorial sunshine but over a 4'x4' area... Or just as another example, a 150w at 7" above a plant also emits enough PAR to just about equal equatorial sunshine... but will only do so over about a 2'x2' area or less.
So if you have one plant - I'd go with the 600w over the 1000w and save some electricity cost. Unless that one plant gets over 3'-4' tall, you'd just be wasting money running a 1,000w.