im using a 200w fluro grow light. the ballast gives off shit loads of heat, so im using 3 inch computer fans running off 12volts. i bought 2 fans at £3.99 each. The 12 volt adapters cost £5 each

one fan will get placed directly above the ballast to expell the heat, the other fan will be inside to circulate air. I'm using passive air intake

anyway, to get the PC fans to run off mains electric....this is what u do.....like anything...its easy when u know what ur doing
chonged Reviewed by chonged on . Grow Box Build for Hindu Kush ive just bought this little old hi-fi unit from a junk shop by me for £7. i looked everywhere for something new...but nothing fitted my needs...i was just passing the junk shop and noticed this....it needs a damn good clean n stuff but it suits my needs perfect. So over the next week or so, i'll be converting this into a veging chamber. its dimensions on the inside are Depth 15.5 inches, Width 15 inches Height 19 inches. it has a shelf inside so i will be able to take the plants upto the Rating: 5