Definitely two seperate areas. You can connect the two like you planned. Might need a booster in-line to help airflow. Your light is questionable. It says it’s a bit better than most cheap blurple LEDs, but it still uses old tech. You would need about 3 in flower tent and 1-2 in veg tent, but there are way better options for less $$. Quantum board four packs on amazon and a little diy, and you’re in business for less than $1 a watt
The best bang for your buck right now is quantum board lighting. You can buy 4 packs of the qb120’s and qb132’s on amazon, get a driver to run all 4 boards in series or parallel (HLG website has recommended drivers), build a frame out of 1/2”x1/2”x1/16” aluminum angle from Home Depot, an old extension cord for the power supply end, and 30’ of 18 ga solid core wire Two 4 board lights in each 4x4 would be sweet. Could probably spread the four boards out some and make one 4 pack work for veg in 4000 or 5000k
the 8" pipe will not have to be too long, it will connect to the top of the veg tent and to the bottom of the flower tent, get black flex pipe and those 2 bends should be your light trap.!! may i suggest.... open as many bottom vents as possible on the veg tent and run TWO 8" pipes from the top to the bottom of the flower tent. if that is not enough air flow you'll have to remove one pipe and add another 8" inline.
They are sold out right now, but will be back in stock. Just keep checking daily and scoop them up when you can. On HLG website, they have driver recommendations for the specific boards if you scroll down to the bottom of the page for each board. If you’ve built anything PC, you can do this.
the regular 8" a/c flex duct with reflective insulation on it has black pipe inside.!! i am using 3 HLG 135w QB's and loving them.!!!!... one 4000k for veg and 2 for flower a 4000k and a 3000k...
Oh you can buy tons of combos and diy. But the best bang for your buck is with the 120’s and 132’s. And they don’t use heat sinks because they run cool enough. Most of the other boards use higher wattage boards that require heat sinks, this makes the spread not as good, and creates hot spots, but the penetration will be better. I train flat canopies so the 120’s or 132’s work for me, and less than $1 per watt