Neither of those are really ideal for either space. Anything below 600vwatt hps major drop in efficiency. The two common cmh rigs better suited for square space. If you got small enough hoods you could probably flower with two 315’s though. Veg I would stick with t5 or led
I see 
Can you provide me with some “reputable” chinese suppliers for LED? Is it forbidden to state them here?
Samsung, cree, bridgelux, citizen. Keep in mind they all make high end stuff and lower performing stuff.
1 Like
One last question should cover all the options
How many T5s for the Veg 20.5" × 35"? Should I do some calculation based on 20000 Lum for that space?
If something like 24" 4 bulb t5ho is available should do nice job.
Thanks bro.
1 Like
You will have a laugh 
I found these in the local market.
220V, 80x1W, 8000Lm, IP65, 3500K, Warm White, USA Bridgelux
It could work if I disassemble the covers and connect 2 boards together?
1 Like
Work for what? 8000 lumens at 80 watts is 100 lumens per watt. That is just slightly bit more than t5ho fluorescent. So I would consider on same playing field.
1 Like
Exactly! I am talking about the veg space since I didn’t found yet the T5HO
1 Like
@dbrn32 Sorry to revive this thread.
Maybe I found a place where to buy Bridgelux eb gen 3 strips.
I am planning to build 1 board of 100w and 1 board (divided in 3 pieces) of 300w. How many strips do I need and which drivers?
1 Like
eb gen 3 is the current offering. Digikey and Arrow should both have them, maybe others too.
You are basically looking to build several 100 watt fixtures then? Which length are you wanting to use?
I got these spaces:
Veg 20.5" × 35"
Flower 20.5 × 67
Yes, willing to build several 100w fixtures. I would say 12"x 20" each. 1 driver for 1x100w for the veg and 1 driver for 3x100w for the flower space. Or would you suggest another setting for the flower space?
I think about 100 watt light is great for the veg space, the 560mm strips are ideal. If you don’t need dimming. 7 560mm eb gen 2 or 3 on meanwell lpc-100-700.
I don’t think you could physically fit 3 of those in the flower space though. Any thoughts on doing larger fixtures and two instead of three?
1 Like
Thanks bro! Yes let’s go for two fixtures instead of three.
1 Like
How much of a problem is heat in your grow space? You can save some money buying less strips and running at 1050ma. If you wanna do that, I would go with two hlg-185h-c1050a drivers and put 9 of the same style of strip on each driver.
If you want to run a little more efficient go with hlg-185h-c700a driver and 14 strips on each driver.
I would do 4000k-5000k for the veg light. I use 5000k, but they are sometimes more difficult to find. For the flower light 3000k-3500k.
1 Like
I didn’t try it yet regarding the heat. But if vertical space helps, I can upgrade it to 6.5 ft plus good airflow. Moreover I have an AC in the room. What do you think? Which option is better?
I don’t think would matter much, but I would give yourself as much height as possible. More height will keep options open for what you can do in the future. Question i was asking has more to do with your climate.
Maybe I will run into heat problems since my setup is not optimal and my budget is limited. Moreover the climate is hot.
So the best option is to run less strips at 1050ma right?
And it can be upgraded in future.
Generally speaking lower current is better. Running at 1050ma allows you to buy 10 less strips and save some money (5 strips less per fixture) on the flowering lights. It’s not a huge increase in heat though as they are only something like 5% less efficient there. 1050ma is fairly good current for those strips.
1 Like
Got the idea. I should do some readings on this topic to figure out better how they works. Always learning from your experience.
Since they are not dimmerable, I should work on the lights distance, right? Is there rough standards on light distance per each stage assuming the 1050ma setup?
1 Like