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have a nice and secure weekend :bigjoint:

:peace:A certain percent of media will stay free - thanks to the internet. As long as internet is not restricted. That what I call free press here in europe still keeps laughing about this muda-earth-fuka. But people suddenly get stopped in the airport because their US-visa is cancelled -...

Once I rented an old big (3 floors 400sqm) house in Spain. There was no central heating - only fireplace and wood. I closed the open chimney down in the kitchen with metallframe, glas-door and hanged an old , used serpentine of an old gas heater inside. I was able to suck 8000W out of the...

:peace: sorry - I didn`t know :idea: I m really interested in seeing new, watercooled set ups - maybe that´s my reason to pronounce my post in a provocating way - @Schalalala !!! no interest in disturbing tecnical exchange like others.

:clap: Whooow Lofty - just spent 2h in and around your garden - amazing, great, excellent job to post this all here. So hungry - that i talk later about watercooling.

O.K. - Thanks - see you later :eyesmoke: - any info of the measured led-chip ? (:

:peace: @The Grand Blunt Wizard - Hi :eyesmoke: What they call "Intensity" is normally called "Relative Spectral Power Distribution" Can you tell us more about the led-chips you measured ? I have a led-light company in germany since 2013 - I sell all kind of led-light - any interest in joint...

Na Bubi:cuss: :( na kichwa mgonjwa, inaweza kuwa walidhani vibaya na kusema - Kabla ya fuvu kupasuka kwa wivu - kuujenga mara ya kwanza mimi mwenyewe na basi nini watu wengine na wengi wanaoandamana yako kwa amani.

200W lamp power generate 100W of heat - and everybody with a 10gal bucket is able to store this heat in the cooling water. It prevents clearly overheated growrooms. - Specially small one`s. During the night - the lamps will work like a radiator and bring back heat to the air of the growroom. So...

only google can translate your post : Hey Lumenladen you small Schalartan, what goes with you? Have you all serious extra the aluminum behind the COBs cut away so that the water comes directly to the Cobs? Mega-Fail! It's really the best thing to see how you feel to yourself that your "system"...

just couldn`t find a smaller pump than 2,3W bongsmilie

Hola hermano - que tal ? de paseo aqui ? Can I help you with this data sheet ? https://www.aliexpress.com/store/product/Meanwell-constant-current-LED-Power-supply-HLG185H-C700-700mA-200W-with-PFC-waterproof-and-adjustable/1982643_32711592732.html?spm=2114.12010612.0.0.eY3uv8 Now as it is all...

Thanks for your offer - same for you (the use of different physical units is a mess) OK. the little red bucket in the pic is not what I use " at equilibrium ". In the growroom I use 11gal (40L) of water with improved evaporation (pyramid of waterbottles and old sockets to get a huge, moistured...

:peace: very pleased to meet people running that "car". at the end we drive with a bigger joint in our hands -

A water-bucket with 10L water / 100W of lamp power is enough heat-capacity to have a basic cooler without any radiator. There are a lot of natural (pasiv) cooling methodes like metall-buckets, clay vessels, room fountains and evaporative cooling have great potencial. Just add some water from...

:peace: @Shugglet - only lower chip-temp is a fact that shows that led-light has much more posibilities and potencial to win the race against HID. I see no way to watercool a HID-light. And so watercooled led-light now doubles speed and efficiency at the end of the race and will substitute...

Is 1 US$ / real W of lamp power really expensive ? In the moment the coolmac-system-kit is avaiable up to a 1200W led-lamp basic-version and it`s prize is less than 1000 US$. The system is easy to copy and if you buy all single components you pay even less. (me: ~ $ 550) Cree-chips &...

@brewbeer :peace: Hi :leaf: I can give you some data of my coolmac-300W room-temperature: 21°C ingoing water-temp (red bucket): 23,7°C outcoming water-temp: 25,5°C waterpump 40 L / hour 2,3W (cool down up to 2000W... and more) lamp...

:leaf::eyesmoke::leaf: Ok. - the problem is not about chip prices - but to bring chip-temperature down, you can use nearly all kind of high power smd chips and seal them on this coolbar and connect them directly to the cooling water. This coolmac is easy to copy and everybody can try it - I...