Aloha Stig.

I would have loved to do a UFO vs Procyon grow.
Alas, no can afford a Procyon.

Fortunately, it's been done.
The Procyon wins from all I've gathered.
But, bang for buck begs the question;
"Is it twice as good?"

O. M is spot-on as usual.
I agree with everything he said.
You are in very good hands here.

The dual UFOs are tempting, but maybe read Ledtimes thread for a better plan.
I like what he's doing.

When I used 400W HPS, I was growing in "Supersoil" and had less experience.
Now I do much better with 150W. led light, but I'm growing in DWC and coco so ah dunno what I might get with the HPS under these conditions.
Just can't make a real comparison.
And can't afford to feed and cool the HPS anyway.

That said, I do have 2. 5 gallon, DWC'd, clones going.
One indoors under a 150W. led array, and one under Tropical sunlight.

To my eye the sunlit buds are almost twice as fat.
Just started flower though. (14 days.)
And the days are about 1/2 hour longer outdoors this time of year.
I'm waiting to see what happens when the days get shorter.

If the day ever dawns that my innies match my outies.
I will say that LEDs have arrived.

Weeze,
(The 5th Rutle)