Apologies for such a late response. I've had to do some traveling and expo-speeches.

Yes, many over-complicate their hydro growing.

The 3w diodes, if not single-chip, tend to be less efficient than 1w didoes with a closer spacing. Added resistance pushing the power to three diodes instead of one causes a loss in efficiency and adds heat.

And I'm pretty spot-on with most of my weight guesses. Thank you for the compliment.