I'd go with the 5x 23W TCI. They are more efficient (154lm/w vs 141lm/wt) and people have been having good results with them.
People have been shooting for around 5-7k lm/ft2 when using these, so figure out what your square footage is and multiply that by the amount of lm/ft2 that you want to use, (somewhere between 5,000 and 7,000lm/ft2 is good for no CO2, but the more light the better) and then divide that by 3,542lm (23watts x 154 lm/watt = 3,542 total lumens per strip) to figure out how many strips you'd need.
Ex.
Let's say your trying to flower a 2' deep x4' long tent.
Total ft2 = 2ft deep times 4ft long
... Which is
8ft2
Let's say you're
shooting for 6,000 lm/ft2.
So then we'd multiply 8ft2 x 6,000 lm per square ft.
8ft2 x 6,000lm/ft2 =
48,000 total lm needed to flower your tent.
Then we'd have to divide the total lumens needed to flower your 2' x 4' tent by the amount of total lumens emitted per strip, so that you'd know how many strips to use and buy.
48,000 lm ÷ 3,542lm/strip = 13.55 strips
Lets say you're shooting for 5,000 lm/ft2, then that would be..
8 x 5000 ÷ 3,542 =
11.29 strips..
Lets try 7000 lm/ft2..
8 x 7000 ÷ 3,542 =
15.81 strips..
Lets try 8000 lm/ft2..
8 x 8000 ÷ 3542 =
18.06 strips..
Because you can't buy half a strip and because they are sold in quantities of 5, you'd have to purchase 3 sets of these strips (15 total strips) but would only use 13 or 14 of them to flower the 2' x 4' tent at 6000lm/ft2. Using lumens to calculate quantity of light needed is a ball park figure and you'll ultimately have to adjust the height of your fixture with whatever your plants like.
You'll also need something to mount them on, the sex pistils used a baking sheet that was pretty legit and cheap. Page 13 on this thread.
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Good luck
)
you r absolutely right bro !
