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Do you use heat sinks at all?

Do you passive cool or do you fan cool. How hot do they run

Ok so with this setup each is drawing 50 watts of actual power at the wall, so effectively i have 300 watts of led light and probably need 400 watts at least to replace the 600 watt hps right?

Awesome i plan to run 8 but currently just have 6. What area would 6 cover do you think and what area would 8 cover. How many do i need to produce 95000 lux to replace my 600 watt hps. My heat sinks are MF20 x 151.1 from conrad and im told i dont need any fans with these heat sinks, it that...

Ok thanks

Can anyone answer this?

2 x Meanwell HLG-185-C700B With 6 x CREE CXB3590 3500K, CD 72V How many Lumens will this produce with the 6 crees and what area will it cover. Thank you.

6 x Cree CXB3590 3500 K CD 72V With 2 x Meanwell HLG -185-C700b How many Lumens. Thank you

and how does that compare from a cost prospective to a HPS? if using the best white from Cree?

Efficiency of a light = photons/heat to keep it simple stupid we might say basically a watt of energy is a unit of heat... some food for thought. Led vs HPS 6 x CLU058 @ 2amps = 636w / 103998 lumens = 163 lumens per watt a 600 watt hps = 95000 Lumens = 158 Lumens per watt. both need...

Its the stored energy of the seed, that energy deteriorates with seed age and if a seed germinates from a greater depth below the soil it will burn more stored nutrients. The first leaves represent the stored energy in the seed from the mother plant that produced the seed.. and the mother...

Its first leaves are only yellow because they were what got it out of the ground before it grew roots. it doesn't really require any additional feeding at the moment. The yellow leaves are the seeds cotyledons. A cotyledon is a significant part of the embryo within the seed of a plant. Upon...

If im not mistaken thats a magic bean stalk plant, they are very rare, you lucky bugger. Look after it and you will be rewarded.

I looked at Cutter but wasn't wanting to DIY , A lot of people just want to buy something already made off the shelf locally that will do the intended job. I hope someone taps into this NZ market, there are a lot of growers here. contacting Hyalite http://www.hyalite.com.au/ would be a good...

Thanks everyone on this forum for your help, A member from this forum is from New Zealand and has offered to build me some lights. This seems the most cost effective way for me as shipping to New Zealand is around $300 alone. Really appreciate every ones help and info.. I really hope some of...

Thanks Ive been offered 2x Johnson Cx4 for around$800us for the 4x4 area so add that to the choices as well. options are certainly overwhelming. what are peoples thoughts on the Johnson Cx4. I have had so many PMs with great ideas ... this is way out of my field of experience and a big money...

Hi Ive been offered 2 x Johnson cx4 for the 4x4 1.2 x 1.2 meter tent. what are your thoughts on this replacing the 600w hps Also fan noise is very important, i need near silent fans , what is the db of the fans in the cx4 are the as quiet as a computer?

Its definitely been something ive considered before, just a normal light hole and not keen on enlarging it, but if i can reduce my heat first by led efficiency then vent out into this small light hole, the air con can do the rest. infact i might take the light out and run a small alkathene pipe...

Yes Budget is a problem when converted to US from NZD it becomes a lot more pricey. I have looked at Spectrumking before and its time to think about them again. Soo many choices it becomes mind boggling. I dont have a air cooled hood just a bulb in a simple bat wing reflector, I use air con...

Hi I Need a quality ( cree?) efficient, low wattage, near silent Led light to fill a 4x4 tent to replace my 600 watt hps. Phillips bulb. It needs the ability to pull a pound easily like my 600 watt does in my shallow flood and drain tray with a few weeks veg. Heat is a major problem for me, i...