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because for $US 111,15 you get ~3 x 132 boards and you have to drive them close to max. current to reach 200W - cheap chinise prices for 3,8 cent/w is a strong argument against 50 cent/w of HLG also the spectrum of 2700K has lower par values than < 1800K red phosphor cobs.

I would buy 100pcs for $US 111,15 and drive them @ 2W each. The incredible low price, and the higher light efficiency of low current - makes it possible to create a led board without heatsink at all, because @2W you can take the chip into your mouth without burning your lips. The layers of...

sorry - i know a lot of mexicanos - and they all dig much faster than any US citizen.

looking from far outside USA - !!! urgently !!! his place should be on the right side of President Lincoln and JFK... only a dead, fucking nazi pimp - is a good nazi pimp. My pee pee is waiting for his silly scalp:twisted: :hump:

i thought that people who miss a working penis or pussy would rather buy a big Mercedes - and i was convinced that people who buy a fire arm - lack a working brain. Now - i know that many Americans start their day without Mercedes - without pussy and penis and without brain......just planning...

if your head room is limited - you may not find any tents, that fit in that space. I recommend the interior finishing with white, coated chipboards. think about to insulate the roof against summer heat and winter cold, if its not done yet. to light up such a limited space - use wide...

... if you dicide to watercool a DIY led lamp. ... your harvest is weed & heat light heat cogeneration can triple the energy efficiency of your (led)lamp easily ...with less additional electricity for a better, active +++ cooling. ... if you are able to use this heat in your household...

GOD = EVOLUTION (and everthing and everybody is a part of it) if there is no evolution @ all ---> there is NO CREATOR @ all evolution = ability to reproduce + variation + selection Charles Darwin spelled this formula 300 years ago, and told us, that life and creation is a long, wet and never...

A square aluminium tube 8$/m , fittings, rubber, screws and other alu-profiles 22$ heatexchanger (min.80L), hose and pump ~220$ that`s a basic 250$ equipment for the cheapest, most efficient***** watercooled led system, if then you spend 750$/1000W in drivers and chips - you receive a 1000W...

to use these cobs @ high or max. current is not recommended. the silicone layer of denser red/yellow phosphors (logically)will get much hotter than any other cool, warmwhite chips. Once you see the silicone above the led die visibly changed - you will have a "thermal runaway" as loosing...

ouuups - that`s not a cheap one :clap: right - but i like if they stay you should drive them at half current as max. - 25% even better. and that really helps to keep temps lower and rise efficiency. 6 x 100W chip @ 1,5% of max. current(3A) ---- 10W in total / 1,6W each they do not even need...

you should see what everybody see ...because it is able to prepare hot water or heat a whole building - not only grow rooms can be watercooled. Light heat cogeneration is ~3 times as energy efficient as an aircooled led light - if you use the heat energy to substitute fossiles. My Tj is @...

that`s insane - have a look to the waterflow of the system. The cooling tower works with vaporisation and is a cheap diy cooler, that don`t need additional energy if you connect it to the air coming out.

i never used the boiler with electricity - but there is a magnesium anode inside and a 5 year warranty worth the money(190$). in summer i grow with 350W --- in winter time up to 1200W we now profit of electricity cloud accounts, that enables you to consume 100% of your self produced KWh by wind...

where i live the incoming cold service water is 13°C in winter and 16°C in summer. the cooling cycle in my lamp is only 2,4L heats up quickly and then let the heat drop into the 80L heatexchanger.

you need min. 4 of those panels to substitute 1000W HID better 5 not really the best option and quality - they tend to get hot, because the chinise give a shit on low temp.& current efficiency and drive the lamp build @ temps that will destroy them after ~2 year of use(~15000h) The cheapest...

those electr. boilers are not really expensive and help to integrate the hot water into your household.

this is already answered above // peak of carotenoids + high ratio of cyan in natural daylight when i eat carotenoids (vitamine A, beta carotine....they help me to drive my eye function / my photosensitive antenas. They also cause a visible yellow/orange pigment in my skin, that helps to...

i can rewin ~80% of the produced heat power only from the backside of the led platine. That means 60% (0,8 * 75%) of the lamp power(Vf*If) is inside the heatexchanger. 40% is flux & heat @ the frontside of the chip(LES). I was thinking about cooling the LES but yes - this lens would reduce...

that brain shit only happens, because your mothers didn`t allow you to buy condoms