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That was not easy to look at with an empty tin Full on lumps

That driver has 2 outputs output a for 2 boards in series output b for 2 boards in series a & b boards must not be connected to each other & dc is not connected to ac that is the drivers job

There are NO trusted Chinese brands. Many are so proud of their work they don`t even put their name on it. If you get a highly efficient light designed by enthusiasts such as https://chilledgrowlights.com/ https://horticulturelightinggroup.com/ they will send to SA, but you will probably be...

I can monitor the temps with ir thermometer & will lift the drivers off heat sink if needed. Heat is definitely not an issue at present. Got a ChilLED 100w on the way that will blow a gale out each side to hang between the 2 QB`s for some extra photons.

Got a 14 fin oil heater in room near inlet. 80 yr old house at cold end of NZ. Lights (QB135w288V2) have been on for just over an hour & driver temp (mounted on heat sink) is 37C. Tent temp 20C. Not ideal but summer will get here eventually.

Extra heat from the drivers can be good. Currently 7 deg C outside. Probably 4 by sunrise.

I started for the season about a month ago even though it is still too cold. They are rather small. If I posted a picture, you could have a laugh and massage your knob

Is it made in China

I read on another site, you Re QB96 info. Can`t be arsed joining to respond. Might be useful brain food Best dimmer on planet? https://www.rapidled.com/cased-potentiometer-with-knob/ Demo, 1 dimmer controlling 2 (or more) drivers (starts at 9:30

I throw the cabbage away & keep the lumps No future coffing ring out

either of those 2 will be perfect the cold one has the same base spectrum as the qb, but blue & red are boosted which I reckon is good

Yeah, seeds are a real womans thing when ya have none. Did without for 4 years until a mate gave me a few that were left on passenger seat in car after someone had rolled up. Got me going again after having an empty tin covered in cobwebs Potting mix I usually get from warehouse etc but am...

This blokes LED lit rabbit food looks healthy enough

Yes 2 or 3 for a 2x4 Good efficient light they be 2.04 umols PPFD/watt. Lens might be better suited for a torch or spotlight

US$175 It is only 100 watt but will blow away the cheap & nasties something wicked Very efficient, heaps of light out for the power going in https://chilledgrowlights.com/our-products-services/diy-led-grow-light-kits/chilled-100w-plug-and-play-kit

what is the area you want to illuminate? (this is important) $150 is not much to spend on a light, maybe the cheapies is as good as it gets

It draws 200 watts from the power point. It is a 200 watt light sold as a 450 Much the same as the 1st light you mentioned (cheap & nasty)

Bummer. Good luck with your 200 watt Vipar 450w

Run away as fast as you can. Don`t look back. Tell us how big an area you want to illuminate & how much $ you have to spend & someone will recommend an honest light A 1000 watt light that actually uses 135 watts is not honest, it screams cheap & nasty