lol, that is wrong,(I think)You show me facts and I'll beleive.
I know for a fact PC
and No have the same lumens per wat (or extremely close).vho
I am unsure but I assume the same.
The only true way to get more lumens per watt is to get a MH
or something, they do put out far more lumens per watt of light.All vho
does is cram more watts into each tube.
The only reason vho
are better is space. See if you have 240w of vho
and I have 240w of NO
it is the same thing. I have more tubes but they cost alot less also.
On your note though.If you wanted to upgrade and add another 240w of VHO
it would fit on your tank with your other.For me I am stuck at 240w I have no more rooms
(please coerrect me if I am wrong)really