CREE COB 3070 DIY GROW LIGHT TEMPERATURE passive and active cooling 2.1 amps 36 volts HD

Checking the difference in temperature between passive and active cooling on a DIY grow light Using 2x CREE COB 3070 ,3000k 2.1 amps @36 volts BOSSLED Ⅱ 1000W Double Chips LED Grow Light: http://www.amazon.co.uk/BOSSLED-Specturm-Greenhouse-Flowering-Growing/product-reviews/B0186X1IB2 To make the Cree Cob Bar UK/Europe Suppliers: Cree Cob CXB3070: http://uk.rs-online.com/web/p/cob-leds/8847380/ Mean Well Driver: http://uk.rs-online.com/web/p/led-drivers/8234813/ LED Holder for Cree CXB3070: http://uk.rs-online.com/web/p/products/8750194/ Aluminium Heatsink Profile A (T Series): http://futureeden.co.uk/collections/alluminium-heatsinks/products/alluminium-heatsink-t-series-profile-a-86mm-x-22mm High Conductivity Thermal Compound: http://futureeden.co.uk/collections/thermal-glue-and-compounds/products/high-conductivity-thermal-compound HSS M3 Short Machine Threading Tap: http://uk.rs-online.com/web/p/threading-taps/5089935/ IEC Connector Plug: http://uk.rs-online.com/web/p/iec-connectors/0449922/ Pan Head Machine Screws M3 x 20mm: http://www.screwfix.com/p/easyfix-bright-zinc-plated-pan-head-machine-screws-m3-x-20mm-25-pack/5875j Wago 222 Series Non-Fused Terminal Block: http://uk.rs-online.com/web/p/non-fused-terminal-blocks/4751437/?origin=PSF_435792|alt