DIY LED with COBs - small medium and large grows

[sixstring]

2700k is my preference for flower only and 3000k or 3500k is for both veg and flower. But I definitely think 2700k makes the best flowers

 

[Paldo]

Ok thanks very much for info. So have this almost 1m2 area what diods/spectrum U will chose? I want to run 8 diods in 3 lamps, 3th will be only for flowering with two diods. So 3th will be two of 2700, and mayby rest will be the mixture of 3000 and 3500? For ex 2x3000 nad 4x3500? Or mayby better idea to ad few which I will change, other for veg and other for flo, for ex. 5000k for veg and 2700 for flowers, so it will look like this: 4x35000 and 2xchangeable 5000k veg 2700 flo. Is it a sens for that combination?

 

[Paldo]

Ok if it's to complicated we can vote:

1. 6x3500k and special lamp for flo 2x2700k
2. 4x3500 + 2x3000 and special lamp for flo 2x2700k
3. 3x3500 + 3x3000 and special lamp for flo 2x2700k
4. 4x3500 + 2x5000k for veg and 2700k for flo; and special lamp for flo 2x2700k

The 3th option cost me more for diods, which I will not use all the time, mayby it's a waste, better run it all all the time, hmmm?

 

[Paldo]

This is how I want set lamps. The box is 110x75cm and lamps are 50cm and 25cm (midle for flo) long.
Good idea? :D

 

[sixstring]

This is how I want set lamps. The box is 110x75cm and lamps are 50cm and 25cm (midle for flo) long.
Good idea? :D


View attachment 780182

i would make lamps about 70cm long instead of 50cm and center lamp 40 to 50cm long.also you are over thinking the spectrums.you want an all around good color for both veg and flower just use 3500k.and if you add those 2 x 2700k cobs to center you are good to go.

 

[Paldo]

but if 3000k will work good for veg also, I can do it like that. The best for flo but I gues no so good for veg...

 

[sixstring]

35k 27k 35k

30k 30k

35k 27k 35k

good layout for full term growing if ya wanted to mix those 3 colors

 

[Paldo]

i would make lamps about 70cm long instead of 50cm and center lamp 40 to 50cm long.also you are over thinking the spectrums.you want an all around good color for both veg and flower just use 3500k.and if you add those 2 x 2700k cobs to center you are good to go.

Thanks!

Ye, that was my firs idea :) Mayby I'm thinking to much now...

About 70cm lamp: I want to do it on long radiator, 70cm radiator hard to find and to big, but I was also thinking to hang every lamp seperatly, more work with it to move each one up, but better for plants...

 

[Paldo]

35k 27k 35k

30k 30k

35k 27k 35k

good layout for full term growing if ya wanted to mix those 3 colors

Ye that is exacly what I'm thinking now ;) Exept change the 2700 and 3000, as the midle lamp is only for flo. But I think when the flo start I could just change it as U post it.

And by the way - for veg U will use two or one lamp? 3vs6diods?

 

[sixstring]

https://www.thcfarmer.com/community/attachments/20160827_215150-jpg.645438/

https://www.thcfarmer.com/community/attachments/20160926_202402-jpg.645433/

you can make frames any length you want if ya use the pin heatsinks

 

[sixstring]

Ye that is exacly what I'm thinking now ;) Exept change the 2700 and 3000, as the midle lamp is only for flo. But I think when the flo start I could chust change it as U post it.

And by the way - for veg U will use two or one lamp? 3vs6diods?

need about 20 to 30 watts per sq foot for veg and 30 to 50 watts per square foot for flowering.

Veg room at 25w per square foot

 

[Paldo]

So I will have definitly more W, one lamp use 3000mA driver about 120W so I gues one is just enought for veg, and for flo two lamps 120W + one special for flo 60W - ye it's more then enougt :D

 

[Paldo]

ye but onather think, for veg one lamp like this will be not perfect for coverage...
another reason to make it ech diod each radiator

 

[Paldo]

And about radiator, it will be good for one diod running on 1000mA (about 75% power, they are 1600W max)


[cm]:7,7 x 6,3 x .4,2
Rezystancja termiczna : 2,4K/W

 

[sixstring]

ya know those veros can be run off damn near any drive current you choose,ya dont really want to drive them at 3000ma.for veg i like 700ma and 1050 ma.and for flower i use alot of 1400ma and 1750ma drivers.this is based on the 36v cree and 38v vero.

 

[Paldo]

I changed my mind, I will do it on 2x3000mA drivers (4diods on ech), one for veg two for flo and it will be more then enought, ech diods run on 50% - 750mA (not 1000mA). It will be better idea?

 

[Paldo]

I'm useing cree CXB2530

 

[sixstring]

why ?

 

[Paldo]

also is radiator 7,7 x 6,3 x .4,2 cm will be enought for one CXB2530 on 750ma?

 

[sixstring]

also is radiator 7,7 x 6,3 x .4,2 cm will be enought for one CXB2530 on 750ma?

i have no experience at all with the radiators you speak of so i cant say