8x4 is where I'm headed next. I'm thinking of putting two dimmable 1000w DE HID ballast/fixtures in there. I'd like to go LED but it's just too pricey right now. I'll just do small DIYs for supplement or veg lighting to start. Also, those 315 CMH seem a little under powered for a 4x4 area.
I'll take any thoughts on this, especially regarding these dual end bulbs, thanks.
For the cmh you would want two for a 4x4 or one 630 DE cmh which is not the same as the other fixtures that are just two 315 bulbs.
I am currently running a 1K hps one one side and 600w of cob on the other in my 5x9. Next run will be testing the dual 315 setup in the process of researching equipment for that now. I have seen your pics and they're beautiful so I know you can grow. I think in your hands four 315 setups would yield you about the same or close to two DE 1K HID's while giving off less heat and using just over half as many watts.
This is of course just my opinion based on my experiences so far. I have not used a DE thouie but have and currently run an SE.
To me cmh and COB is where it's at but there's pluses and minuses to both and if you're not doing DIY it gets pricey quick for LED.
I have used a 315 before and to date it's one of my favorite lights. I only sold it off a while back because I switch my electric to 240V for the grow room. I pulled a half plate dry with it in a 3x3 from a NL I vegged for 8weeks and it was my first run ever.
Cheers
