2x36w sansi growing bulbs setup How to use the setup in combination with a 4x4 growing tent the best way

put them near corners to take advantage of 2 refelctive walls. 36w isn't going to grow a large plant. vast majority of your tent will be empty space. even with a high efficacy light you need 30-33w/sq ft. 480-500w will give a good DLI relative to 16 sq ft. Cheaper, lower efficacy lights may need 15-20% more. If it has a umol/j rating, high efficacy is 2.7-2.9umol/J. This will be directly proportional. So if you have a "2" umol/j efficacy, you need nearly 133-145% more power per sq ft. Most led are not that low, but i am not familiar with your light. Those numbers are for a 12/12 operation requiremnt. If growing autoflowers and you can run the lights 18h (or longer), you need proportionally (inversely) less power per hour. so you need 66% of those numbers for 18h operation. 60% of those numbers for 20h operation. 75-85 umol/s per sq ft is another way to look at it. This willget you up near 35-40 DLI. DLI, daily light integral, is the proper way to understand how light feeds a plant and how to compare apples to apples.

You won't get great results from a single or double 36w light bulb. Also is that light LED, CFL or incandescent? LED is the best bang for buck in terms of cost. But its still such a small wattage in a large tent, sure its better then nothing, but its not great. Indoors you also need to give them some wind so they don't get to lengthy and depending how fast their growing they will need food and a bigger pot at some point. an extractor fan is also good to have to help move air out of the tent and get fresh stuff in. Honestly I think the best you can do with this is to move em outside and use some LST/HST to keep em low if your neighbours are noisy, will be hard to mask the smell if the strain is extra smelly but it will finish them off much better then the two bulbs you have. Another option is getting more of them bulbs till you hit aorund 200W and spacing them out even in the tent to try and create a nice light map. But that might be wasted effort and money better put towards a more cost effective grow light. Check out medic grow. They have a light called mini sun 2, I use them and they do me well. They are cheep and good value for what you get. Migro guy did a review on em on his youtube page. I'd avoid the 320w and stick with 240w or 2x150w, the 320 is the same as 240 but they just push more wattage through it, thus lowering the life on the diodes. Good Luck!