Making the switch hps to qb

daadank said:

I'll try it tonight, I was hoping more amps would lead to higher watts.

Click to expand...

Check out hlg site is shows the volts used at different current. Also heat plays a roll those heatsinks are not enough to passively cool a QB at Max current without lots of airflow

nfhiggs said:

600W HPS puts out about 1100 uMol/s at the bulb. Reflector losses eat up about 20% of that, leaving about 900 uMols for the plants. 340 Watts of Quantum boards is going to give you very close to that - about 820 uMol's.

Click to expand...

In addition, one big under recognized benefit of QB and many other LED systems is superior light distribution.

Getting even corner to corner lighting intensity is worth at least an additional 20% relative to a single point source.

Ryante55 said:

It does within spec of the driver if you have the cash I would grab 1 more board and driver do 4 boards 2 per driver you get better spread plus you could crank it up to 600w if you wanted to.

Click to expand...

so you are saying im outside the spec? I'd like to do that but i'd like to see these three perform as spec below.

I'm 3 weeks in flower and wouldn't mind throwing a 4th in there.

lux Characteristics with QB 288 V2 3000K, S6 Bin at 55C
VDC Current (mA) Watts at Board Lm/W at Board (55C) μmoles/joule at Board (55C)
45.72 500 22.86 206 3.00
46.98 1050 49.33 196.10 2.85
47.70 1400 66.78 190.50 2.77
48.96 2100 102.82 180.77 2.63
49.50 2400 118.80 177.50 2.58 Thats what i expected at 2.4.
49.86 2800 139.60 173.80 2.53

daadank said:

so you are saying im outside the spec? I'd like to do that but i'd like to see these three perform as spec below.



lux Characteristics with QB 288 V2 3000K, S6 Bin at 55C
VDC Current (mA) Watts at Board Lm/W at Board (55C) μmoles/joule at Board (55C)
45.72 500 22.86 206 3.00
46.98 1050 49.33 196.10 2.85
47.70 1400 66.78 190.50 2.77
48.96 2100 102.82 180.77 2.63
49.50 2400 118.80 177.50 2.58 Thats what i expected at 2.4.
49.86 2800 139.60 173.80 2.53

Click to expand...

My mistake I accidentally looked at the v1 specs not the v2 you should be all good

daadank said:

Maybe my meter is wrong, its a smart outlet.

Click to expand...

Huh? A smart outlet will not measure the output voltage of the driver, or the output current. It only measures the AC voltage of the outlet, and the AC current (and power) of the outlet.

nfhiggs said:

Huh? A smart outlet will not measure the output voltage of the driver, or the output current. It only measures the AC voltage of the outlet, and the AC current (and power) of the outlet.

Click to expand...

yeah... i was just coming to post that. My multimeter is dead not going out tonight, but turning the dimmer up put the watts where they should be, at the wall. I should have specified it was a killawatt meter like device. And now im realizing its Vac?

yeah i kinda dont know what im doing... is it ok to turn the dimmer while the light is on?

daadank said:

is it ok to turn the dimmer while the light is on?

Click to expand...

Yeah you can do that, it won't hurt anything.

All going well. 4th week of flower looks very good. I’m skeptical about 330watt qb vs 600w hps but so far looks as good hard to tell really. It does seem lower buds are doing better more even 12+ inches below.

What driver should I get to drive two boards to max, max safe/recommended. Like 240w