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I did not know. In your case,for 100$ I would recommend getting another viparspectra. The brand has a good reputation are the competitors are very similar. Also since you already have good results from your 2 units, you know what you'll get.

If you have a tight budget then why would you buy a light if you are planning on building a cob later on? That would be a waste of time and money. You should keep going with what you have and once your grow is finished you should decide if it wise to continue and if so build your cob setup. My...

Try to add a question to your thread.

Can you notice the smell outside of the room?

Alright guys so I am planning my grow tent setup and I was wondering if I had to vent out the exhaust that is filtered by a carbon filter or if I could recirculate it. I want the least odor possible. Thanks!

rip Cobkits

Don't be scared to hurt your girls, they are weed after all so they can take a beating.

Oh and I forgot the most important question, what is your average yield per watt or par watt and what is your setup?

1) how much par watt do I need per square foot for veg? 2) how much par watt do I need per square foot for flowering? 3) anyone know the efficiency of the cobs in Mars hydro led and in most hps bulb? 4) what the best cob for the price available on alibaba right now?

How were they not doing the job?

what about cheap drivers? have you ever tried one?

I am planning to build a led fixture for my grow tent and I am wondering if drivers make noise like hps ballasts do? if so, how noisy do you think it is (comparison)

I'm thinking about growing in 70% coco and 30% perlite and using smart pots but I don't know much about them. So I have a couple of questions. 1) It says that you can reuse coco, but how the hell do you get the roots of the previous plant out of the coco? 2) Since coco is lighter than soil and...

Thanks for the calculator, still need answers.

How much Par watt per square foot do you guys recommend ? How can I find out the par watt of my build, if there's a formula, what is it? What is the ideal distance from the LED lamp to canopy? How can I tell the efficiency of a led cob chip at a certain intensity? What's a good place to shop...

I just downloaded the program and I find it really nice, the only thing I would add is a 'Wattage' line in the Fan and the Reservoir section of 'Rooms' so we can keep track of the electricity use of each room.

Bump

I am planning my grow and I want to use LED. I will growing in a 3.3'x3.3' tent and I am planning on using either a cob 350 power drawn http://cobledcanada.com/product/768w/ Or a Mars hydro 2 400w that pulls 188 watts Which one do you recommend? Also why

Also if I had the choice between the cob led in my original post and a Mars 2 LED light or simply classic Mars led light, which one would you recommend?

What is the correct spectrum and intensity? It says full spectrum and I don't know where to look for the intensity.