4x8 for 630cmh or 4x4

would it be smarter to use Two 315w cmh in a 4x8 or a 4x4?

Seems a 4x4 doing 4-5 plants would be tight.

thoughts?

4x4 can fit 4x 6-8oz plants in but plant numbers are a bit meaningless since you could grow 1 plant to fill that space or 64 plants.

But 315s cover 3x3 ideally. You would want a 630 over 4x4 maybe 5x5 at a push but I have not used a 630 either double bulb or double ended single bulb.

With 2x 315s in separate fixtures a 2m x 1m tent might be best option

I have two 315 fixtures. So sounds like if the area for them inside the 4x8 then I could keep them in a 4’x6 area inside the 4x8 no?

I'm currently using 2 315s over my 4x4 planter bed. Seems to work good but doesn't really cover the outer edges of my 5x5 tent, but works great on the 4x4 space.

2 - 315's work real well in my 4x6 got no complaints.I use only 1 - 315 up high for veg,then add the 2nd when flipping

Aviatorshades said:

I have two 315 fixtures. So sounds like if the area for them inside the 4x8 then I could keep them in a 4’x6 area inside the 4x8 no?

Click to expand...

Well its always nice to have room to move too! Just because you have X size tent doesn't mean you have to fill it.
Sometimes I wish I didn't when it comes to getting in there on harvest day.

yeah so the idea was to use a space inside the 4x8 that would be 6' total. have 2 where the 315 is right above them, and then have maybe 1.5' between the next two and hang the other 315 above that. i feel they need the room. 4x4 is cramped for 5. maybe i just have to mainline to maximize space. 2-3 zips a plant is sad no?