Is anyone coming from 1000w mh/hps that is getting similar or better results with LEDs?

Mathimus said:

I get what you're saying, don't think I'm misunderstanding the concept. The purpose of a heat sink is to offset the amount of heat that an LED is putting out by transferring the heat to the heat sink. Yes? The more efficient the heat sink, the lower the ambient temp will be in the tent/room because it is dissipating heat at a slower rate - since the heat sink is more efficient. Tell me if I'm wrong here.

Click to expand...

Yeah your wrong.

The heatsink removes the heat faster or slower from the led but it still heats the space the same.

If I get a 600w led bar style light with good heatsinks using Samsung 301b diodes and I get a 600w board sytle light using the same diodes but have it on a plate of 3mm aluminium both will put the same heat into the space.

Or if it helps to grasp, if I put a few pc fans on top of that hot plate of aluminium I can make that plate nice and cool because its been actively cooled. But again the same heat is been dissipated into the tents environment.


And yes not LEDs are equal, but given one top brand using the same wattage and diode as another top brand then the heat will be equal.
Where this changes is when you have an LED with 60% efficiency vs 40% efficiency.

Im only bringing this up because of your misconception , not to defend that particular light.

Anyway im repeating myself now so I will give it a rest.


As far as experience with LED goes, most of the new guys probably started with LED, but there's a ton of guys who grew with HPS for decades before switching to LED and only very very few go back. For some people it doesn't suit their environment , like folks that have cold climates most of the year. Some dogs you cant teach new tricks to either.

There is unfortunately a lot of people who make silly claims like "you get can 2gpw with light X" which though may be possible is not some easy task that comes with just buying the "right" light.

As far as what's better, its horses for course, already far too many volatile arguments going on with this subject and its an argument that gone on for years and will continue for many more to come.

My vote is LED ..I would not use HID again unless I was setting up a huge comercial grow that had very high ceilings and in a residential setting LED all the way. I Started growing in 1992 and over the years have tried all sorts of products, finally landed on SolSheetX LED panel kits that use baking sheets. With these panels I am seeing production way beyond anything I ever seen with HID..Currently I am seeing 3.5lbs of dried product per 1000 watt draw and I beleive that I can bump that to above 5 lbs next crop.

So I spent decades building air cooled Nitro engines..many experiments with different cooling heads ( heat sinks ).... the better the heat sink the hotter the room temperature and the cooler the LED themselves will be.. the less efficient the heat sink the cooler the room and the hotter the LED themselves will be... If all the heat stays in the LED none will transfer to the room...if all the heat leaves the LED it will all transfer to the room..the more efficient the heat sink the more heat it will transfer !

My current crop is 36 plants under 12 Solsheet X , 160 watts each, averaging over 4 ounces per plant. I use 320 drivers split between 2 sheets ...my grow room is 6'9" x 14'...I have the plants spread out over 12 x 6' 9"..I have a 7 foot ceiling ... I previously ran 3 single ended air cooled HPS 1000 down the center of the room.. now I have the 12 panels laid out as you see in my picture.. my lights are made from cookie sheets with Solstrips 2 way taped to them... each panel ideally lights 2' x 3'... With air cooled HPS I was able to pull down 5 lbs of primo in this room at its very best...I ran into issues with stretch and room size .....with the LED in the same room I will use 50% less power and more then double the production......If I had a big shop with a high ceilings I would look at a primo double ended Gavita due to cost and simplicity , but in a indoor confined space the flexibility of the LED light strips can't be matched and the production per watt is off the charts and beyond anything I ever thought possible..... My setup is unique as my light is not overly bright at any one point but is instead spread out evenly across my entire canopy .. I have C02 and a few other tricks but these lights are simply amazing and are doing much better for me then any sort of HID ever did..

oldschoolnitro said:

My current crop is 36 plants under 12 Solsheet X , 160 watts each, averaging over 4 ounces per plant. I use 320 drivers split between 2 sheets ...my grow room is 6'9" x 14'...I have the plants spread out over 12 x 6' 9"..I have a 7 foot ceiling ... I previously ran 3 single ended air cooled HPS 1000 down the center of the room.. now I have the 12 panels laid out as you see in my picture.. my lights are made from cookie sheets with Solstrips 2 way taped to them... each panel ideally lights 2' x 3'... With air cooled HPS I was able to pull down 5 lbs of primo in this room at its very best...I ran into issues with stretch and room size .....with the LED in the same room I will use 50% less power and more then double the production......If I had a big shop with a high ceilings I would look at a primo double ended Gavita due to cost and simplicity , but in a indoor confined space the flexibility of the LED light strips can't be matched and the production per watt is off the charts and beyond anything I ever thought possible..... My setup is unique as my light is not overly bright at any one point but is instead spread out evenly across my entire canopy .. I have C02 and a few other tricks but these lights are simply amazing and are doing much better for me then any sort of HID ever did..

View attachment 4564594View attachment 4564602View attachment 4564598

Click to expand...

Very nice!

oldschoolnitro said:

My current crop is 36 plants under 12 Solsheet X , 160 watts each, averaging over 4 ounces per plant. I use 320 drivers split between 2 sheets ...my grow room is 6'9" x 14'...I have the plants spread out over 12 x 6' 9"..I have a 7 foot ceiling ... I previously ran 3 single ended air cooled HPS 1000 down the center of the room.. now I have the 12 panels laid out as you see in my picture.. my lights are made from cookie sheets with Solstrips 2 way taped to them... each panel ideally lights 2' x 3'... With air cooled HPS I was able to pull down 5 lbs of primo in this room at its very best...I ran into issues with stretch and room size .....with the LED in the same room I will use 50% less power and more then double the production......If I had a big shop with a high ceilings I would look at a primo double ended Gavita due to cost and simplicity , but in a indoor confined space the flexibility of the LED light strips can't be matched and the production per watt is off the charts and beyond anything I ever thought possible..... My setup is unique as my light is not overly bright at any one point but is instead spread out evenly across my entire canopy .. I have C02 and a few other tricks but these lights are simply amazing and are doing much better for me then any sort of HID ever did..

View attachment 4564594View attachment 4564602View attachment 4564598

Click to expand...

That is impressive on that setup. My room dimensions are about the same. You took DIY to the next level.

Due to medical cannabis laws changing in my county in norcal I won't be legally able to continue the amount of outdoor plants. I am looking into how I can create for first time ever a small grow room w/o sky high electric bills. LED's seem to be cheapest to run.
Impressed with the ingenuity of your room!

oldschoolnitro said:

My current crop is 36 plants under 12 Solsheet X , 160 watts each, averaging over 4 ounces per plant. I use 320 drivers split between 2 sheets ...my grow room is 6'9" x 14'...I have the plants spread out over 12 x 6' 9"..I have a 7 foot ceiling ... I previously ran 3 single ended air cooled HPS 1000 down the center of the room.. now I have the 12 panels laid out as you see in my picture.. my lights are made from cookie sheets with Solstrips 2 way taped to them... each panel ideally lights 2' x 3'... With air cooled HPS I was able to pull down 5 lbs of primo in this room at its very best...I ran into issues with stretch and room size .....with the LED in the same room I will use 50% less power and more then double the production......If I had a big shop with a high ceilings I would look at a primo double ended Gavita due to cost and simplicity , but in a indoor confined space the flexibility of the LED light strips can't be matched and the production per watt is off the charts and beyond anything I ever thought possible..... My setup is unique as my light is not overly bright at any one point but is instead spread out evenly across my entire canopy .. I have C02 and a few other tricks but these lights are simply amazing and are doing much better for me then any sort of HID ever did..

View attachment 4564594View attachment 4564602View attachment 4564598

Click to expand...

I am very very impressed and almost sold.