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  1. HOT5s v LEDs (26 replies)
  2. Cycloptics Greenbeams 315w owners thread (323 replies)
  3. Supplemental Uv during flowering (6 replies)
  4. DE options Nanolux Dimlux Phantom etc... (2 replies)
  5. Gavita pro 600 DE's and seedlings/small veg plants. (9 replies)
  6. 400/600wHPS suggestions (8 replies)
  7. Does BTU/h drop with air cooled hoods? (4 replies)
  8. Photo sensor switch question (6 replies)
  9. Mixing HPS with T5's? And setup? (6 replies)
  10. Looking for good Bulb eTailer in the US (1 replies)
  11. CDM 315 MH PLUG AND PLAY KIT. NEED FEED BACK (0 replies)
  12. converting to AC/DE (2 replies)
  13. Need input /advice for a 6 feet x 8 feet - height probably around 8feet. design. (1 replies)
  14. Do plants finish faster under CMH lights? (21 replies)
  15. lighting a 0.5 x 1 x 1.8 tent (1 replies)
  16. Best 400 volts bulb? (5 replies)
  17. Can I run a MH Bulb in an HPS Ballast (0 replies)
  18. How often should I replace my bulbs? (10 replies)
  19. Light Mover/Light Rail question (7 replies)
  20. DE bulb heat output? (0 replies)
  21. Air cooled DE vertical fixture (4 replies)
  22. Anybody mess with Nanolux LEC fixtures yet? (3 replies)
  23. Lights made in USA by a good company? (0 replies)
  24. Looking to upgrade to DE (5 replies)
  25. Loud outlet pop (0 replies)
  26. [B]New Grower need info about T5 Lights[/B] (3 replies)
  27. Transcend Lighting: The Next Generation T5 30w LED (156 replies)
  28. NanoLux DE Dual Fixture (600Wx2) 208-240V (6 replies)
  29. Gavita Hortistar and Remote ballast (8 replies)
  30. DIY LED growlight (4 replies)
  31. Gavita Flex 750 & RFI?? (5 replies)
  32. Grow Goggles/HPS Glasses (22 replies)
  33. 3k AC/DE in series... what size SOG bed? (1 replies)
  34. Which way should I hang my light? (3 replies)
  35. Light spacing (1 replies)
  36. reflector lens (0 replies)
  37. Can Gavita 750's replace 1000w HPS (6 replies)
  38. 400 w MH warehouse / conversion HPS questions (0 replies)
  39. Ideal lighting for a 5x5' Gorilla Tent (33 replies)
  40. Questions for Beta Test Team (4 replies)
  41. 2x1000w to 3x1000w (6 replies)
  42. 250w straight to the seeds (3 replies)
  43. Want to switch from cfl to t5 for veg some ?'s (11 replies)
  44. Fixing / Replacing hanging system on SunSytem T5 unit (1 replies)
  45. Best Lighting For 2'x5'x7' Box (17 replies)
  46. What have you learned/changed since switching to D.E. system? (11 replies)
  47. heaven brights 500w model v4 (1 replies)
  48. 8x8 SOG lighting help... (16 replies)
  49. Gavita 4'X 6' foot print at what height from canopy (3 replies)
  50. 70w hps bulb difference (1 replies)
  51. Is it possible to run flip rooms with de hps? (0 replies)
  52. seedlings need help ASAP Please... (0 replies)
  53. lighting question (0 replies)
  54. when do plants need the most light? (3 replies)
  55. dimming hps in early flower (20 replies)
  56. favorite t5ho 54 watt bulb for veg an flower (10 replies)
  57. Nanolux DE fixtures w/ NCCS, Anyone? (11 replies)
  58. Myth or reality: t5 yield fluffy buds (8 replies)
  59. T5ho lights, dim glow during dark period ? (7 replies)
  60. For 3x2x5 grow area. T5 or led (2 replies)
  61. So many DIY lighting controllers, help? (0 replies)
  62. T5 lights goes dim when fan placed over it? (4 replies)
  63. From HPS 600 to HPS 400 related questions (3 replies)
  64. Just getting back into reading and comparing.. Please inform me of gavita (1 replies)
  65. 600w on a mover in a 4x8. (6 replies)
  66. switching to gavita 600/750 from 1000w hps (0 replies)
  67. On asymmetric light distribution (1 replies)
  68. 600W solis-tek DE HPS questions. (1 replies)
  69. double d-papillon reflector problem (0 replies)
  70. Best light for a 4x4 tent (2 replies)
  71. DE lamp Sockets (8 replies)
  72. Help planning gavita grow (0 replies)
  73. which light should I buy? (8 replies)
  74. MH bulb outer glass broke but still working? (20 replies)
  75. To Crowd or Not To Crowd the Grow? (35 replies)
  76. moving light inside tent to even scrog canopy (5 replies)
  77. Dimming HIDs affect spectrum? (7 replies)
  78. SunBuddha Self Ballast Metal Halide 400w lamp (3 replies)
  79. Light Meters and The Importance Thereof (6 replies)
  80. ePapillon or DE bulb failure??? (8 replies)
  81. hydroponics hut sucks (5 replies)
  82. Gavita DE vs. CMH 630w systems: pros and cons of both? (284 replies)
  83. LEC ? Ceramic (29 replies)
  84. Ballasts for Dumbies (4 replies)
  85. Footprint Vs. Total watts per sqft ??? (0 replies)
  86. Connecting lumatek dimmable ballast to DIY cooltube (2 replies)
  87. where to buy glass that filters UVC (1 replies)
  88. What 1000 watt ballast should I get? (10 replies)
  89. Ballast Box/Enclosure Ideas (6 replies)
  90. Looking for Non air cooled reflectors. (0 replies)
  91. Question About Surge Protectors (7 replies)
  92. Lighting Options HPS/CFL (4 replies)
  93. Is there much difference between double ended HPS bulbs (11 replies)
  94. Question about double ended bulbs (1 replies)
  95. MH Conversion bulb wont light? (13 replies)
  96. Daylight (4100K) CFL's ? (13 replies)
  97. Help using knna's and Beta Test Teams Data Sets (14 replies)
  98. 1000 watt hps (6 replies)
  99. Plusrite 150 watt hps ballast (3 replies)
  100. UV-B & UV-A: Lamp ouptut and goal umol (6 replies)
  101. Cooltube sizing? (0 replies)
  102. Sunlight Supply vertizontal parabolics (6 replies)
  103. MH Open Fixture? (4 replies)
  104. need help choosing power source for lights (1 replies)
  105. What can you tell me about this ballast? (4 replies)
  106. Would you return this Ushio? (10 replies)
  107. HGL sol9x50w problems,anyone else? (0 replies)
  108. has anyone hacking a light together? i need guidance. think tank if you will (19 replies)
  109. Epapillon 600w anyone using them? (7 replies)
  110. linear LEDs ? (2 replies)
  111. Gavita and tents (11 replies)
  112. Induction Lighting 2015 (6 replies)
  113. Thunder Sundyn vs Sun System AC/DE (0 replies)
  114. Micro Vert Lighting Question (4 replies)
  115. What Reflector for 250watts 2x2x4 grow cab (0 replies)
  116. Double ended MH in Gavita. (8 replies)
  117. 600W? 400W? HPS? CMH? MH? What are my best choices? (14 replies)
  118. vossloh schwabe ballast broken (0 replies)
  119. Hortilux Blue 600w bulbs ARE NOT compatible with all E-Ballasts...caveat emptor! (5 replies)
  120. Diy lighting 24hr timer? (2 replies)
  121. upgrading light systems, few questions.... (14 replies)
  122. Sylvania 310 watt HPS 2 on a 600 watt ballast (2 replies)
  123. Glass less cooltube,,,????? (0 replies)
  124. lumatek ballast + NO WARRANTY (5 replies)
  125. Philips 315w CDM Elite (CMH) (4685 replies)
  126. Gavita 750 de flex for 8ft ceilings? Who uses them (19 replies)
  127. Best lighting option for a 5'x9' tent? 3-600w Gavita Pro's, or...? (22 replies)
  128. best refleftor for gavita remote de ? (1 replies)
  129. Looking for a 400w ballast with no RF interference (5 replies)
  130. 3rd party HID SPD analyses: What lamps to test? (16 replies)
  131. Double Ended Systems (6 replies)
  132. need help chosing a new ballast (15 replies)
  133. indoor tropical sativa grow lighting questions (0 replies)
  134. 1000 w HPS lamps (0 replies)
  135. Reducing EMI while using Gavita Pros (2 replies)
  136. Ballast or bulb bad? (7 replies)
  137. Improvement for me or not? (2 replies)
  138. anyone using conversion bulbs weeks 1-2 of flowering to control stretch (2 replies)
  139. Best hood for even coverage (3 replies)
  140. Do Gavita's need 3 or 4 wires in the 240 box? (10 replies)
  141. Various approximate RQE of Cannabis (graphed) (11 replies)
  142. China Philips HPS,,,,, ??? (0 replies)
  143. 2006 CIE luminous efficiency functions & PC (1 nm step size) (1 replies)
  144. WARNING DO NOT BUY TITAN CONTROLS (0 replies)
  145. Mutiple Ballast settup. (3 replies)
  146. Lumatek 600 set on 400 : really 400 W ? (3 replies)
  147. Light meter questions. Beta team please? (8 replies)
  148. CDM/CMH new bulbs (1 replies)
  149. DE 1000w question? (5 replies)
  150. Can use 150W bulb in 250w digital ballast? (5 replies)
  151. T5s for the win (3 replies)
  152. Carpenter buys LED that is smarter than he is? Now he wants to join Beta Test Team? (20 replies)
  153. Gavita 6-750 DE flex (24 replies)
  154. cfl 4100k at flowering? (0 replies)
  155. Worth running 1000w gavita pro if no mh? (2 replies)
  156. Gavita Pro DE vs. ePapillion: irradiance uniformity results (40 replies)
  157. 150w mh in 250w ballast -burning down the house? (1 replies)
  158. 10k bulbs and UV (5 replies)
  159. gavita controller RF interference (5 replies)
  160. Gavita 600 SE vs. 600/750 DE Flex (SE 400v vs. DE 400v of same wattage) (19 replies)
  161. Action spectra and RQEs weighted with Cannabis absorptance (22 replies)
  162. What Flouro Bulb Use (11 replies)
  163. 12/1 lighting (0 replies)
  164. pll lights (2 replies)
  165. Best value a/c reflector hoods? (4 replies)
  166. Best Par Rating from 400 watt MH - 4200k - 20000k? (5 replies)
  167. It is shown that blue light-induced stomatal opening is mediated by the blue light (9 replies)
  168. Game changer..? (2 replies)
  169. need some help regarding 240v outlet (16 replies)
  170. need some help regarding 240v outlet (0 replies)
  171. How many lumens for 3x2? (6 replies)
  172. lamp cords for digital ballasts (3 replies)
  173. Surface Rust on Ballast? (2 replies)
  174. gavita digistar e series ballast question (1 replies)
  175. say it aint so...... (0 replies)
  176. Reflector LED Grow Light 144x3w VS Satellite 210W (1 replies)
  177. changing out 150 watt hps for cfl (5 replies)
  178. Bulb suggestions? (2 replies)
  179. PLL Fixture blowing fuses but only after several seconds? (2 replies)
  180. How often do change bulbs (0 replies)
  181. What is the importance of far red light?.... (9 replies)
  182. The spectrum of (PAR) may be important to reduce destructive effects of UV radiation (27 replies)
  183. are these E27 led bulbs any good ? (0 replies)
  184. Cant figure out proper canopy/hood spacing (1 replies)
  185. What foot print? (0 replies)
  186. 1000k bulb in a 600w ballast? (10 replies)
  187. Best 1000 watt ballast and hps bulb combo??? (7 replies)
  188. Brand new MH bulbs flicker but won't fire (20 replies)
  189. Cannabis absorptance spectra: calculated and compared (180 replies)
  190. switchable HPS /MH ballast wiring ?!?! (1 replies)
  191. New Flowering Room Hydro Setup (1 replies)
  192. New Lights (4 replies)
  193. Who makes the best El Cheapo T5 bulbs? (0 replies)
  194. lighting issue (4 replies)
  195. Best Pll temperature lamp for flowering? (2 replies)
  196. CFL CLUB (SOG STYLE) (2 replies)
  197. 80w cfl setup? (5 replies)
  198. Gavita Lep .02 Spectrum for Vegetation (0 replies)
  199. Sun Systems A/C DE (1 replies)
  200. my 400 watt hps. light keeps going off (10 replies)
  201. CMH "flashes" now and then (21 replies)
  202. Using green light in the growroom (8 replies)
  203. grow lighting and power (2 replies)
  204. LUX intensity 90w LED vs 250w MH (0 replies)
  205. DIY T5 Help or custom builds? (5 replies)
  206. Questions about DEs and proper layout (7 replies)
  207. 10k / 14k & 20k Lighting for Mothers and Clones? (12 replies)
  208. 10,000 Kelvin Hid Lighting. 1KW. Questions. (7 replies)
  209. PrHow do I properly use this light? (5 replies)
  210. 315 watt cmh vs 600 watt hps (14 replies)
  211. silver lumatek 600 help (0 replies)
  212. Gavita Pro 600/750e? (43 replies)
  213. Philips 1000 Watt Agrolite XT and Quantum (2 replies)
  214. does anyone use Nanolux ballast? (14 replies)
  215. 6/750 DE flex and lep 270 (3 replies)
  216. Why GPW? (23 replies)
  217. gavita question for whazzup (1 replies)
  218. Those Cree lightbulbs vs CFLs for supplemental lighting (5 replies)
  219. Some quick high end HID lighting questions. (6 replies)
  220. Upgrading lights, trying to decide between HPS and LED (9 replies)
  221. 25w per square foot doable? (3 replies)
  222. Neutral bar sparks (1 replies)
  223. Gavita questions- (6 replies)
  224. whats the smallest space someone is running a 400 in (9 replies)
  225. question for lights for pcbox (5 replies)
  226. good ballasts (2 replies)
  227. PLL bulb CRI - important or not? (0 replies)
  228. Need a solution to my electrical problems (43 replies)
  229. how to hook lights up to dryer outlet (10 replies)
  230. Texas Heat (7 replies)
  231. Powering a 4 x 1000w tent. Plug in 8 way contactor? Bad idea? (3 replies)
  232. Powering a 4 x 1000w tent. Plug in 8 way contactor? Bad idea? (0 replies)
  233. Help with 1000w lighting from 110v/120v outlet (15 replies)
  234. 2x70w on 150w ballast? (0 replies)
  235. Light mover a bad idea for this setup? (1 replies)
  236. Lumatek and Hortilux combination works or not ? (7 replies)
  237. Has Anyone used the OG Hood Reflectors by Grow Lite? (0 replies)
  238. HPS vs CFL vs HM vs LED (2 replies)
  239. HID vs LED vs Plasma vs? (0 replies)
  240. What to expect from 700W Cfl grow? (13 replies)
  241. Best lighting for maximum yield in stealth dresser/wardrobe grow (24 replies)
  242. Lamp won't start, only flashes intermitently (2 replies)
  243. Bulb Specifications on Offer - What to ask for? (13 replies)
  244. Homebox S+Hps+LED (0 replies)
  245. lighting question (9 replies)
  246. Gavita, Quantum meter readings... (0 replies)
  247. 600w to 1000w...Questions (94 replies)
  248. Solis tech matrix with a flip flop switch? (1 replies)
  249. 240vac cfl bulbs (2 replies)
  250. Has anyone flowered using 1000 watt MH (14 replies)