8k AC/DE Double Ended Grow

There vegging in their final homes because my veg room was full with plants for another room and I couldn't pre veg and them put them here to flower. So they're getting an 8k veg
 
I just run them on 1000w. Haven't tried to boost them up higher yet. Maybe this run ill run half the room on 1150 and half on 1000 to see if it makes a difference
 
I just run them on 1000w. Haven't tried to boost them up higher yet. Maybe this run ill run half the room on 1150 and half on 1000 to see if it makes a difference

I wouldn't , will lower the lumen maintenance. Just wanted to see if the 15 percent yield bump from the de was wattage related.......

Be safe grower
 
Nope, I just really think the de's are that much more efficient. I didn't change anything in the room besides the lights.


These videos compares and shows par levels
Very informative information on how HPS bulbs work and the importance of bulb temperature. If all of this information is accurate, and it probably is, I would be embarrassed as an engineer that designed most of these air cooled reflectors.
 
Very informative information on how HPS bulbs work and the importance of bulb temperature. If all of this information is accurate, and it probably is, I would be embarrassed as an engineer that designed most of these air cooled reflectors.

Most hid bulb manufacturers don't recommend air cooled hoods..............If the air is cold enough it could cause a voltage drop on the arc. 400c nominal and 650c for de sodium arcs. Running ambient grow room temps over the bulb shouldn't be an issue though imo.
 
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Very nice set up man! I'm running the pro bulb using same hood as yours. I'm using the Galaxy ballast though, works great for my little 5x5 room. Don't look at those bastards without sunglasses though....
 
Very informative information on how HPS bulbs work and the importance of bulb temperature. If all of this information is accurate, and it probably is, I would be embarrassed as an engineer that designed most of these air cooled reflectors.
There is still some confusion on this,
So it is a no no to air cool the double ended HPS but ok on a single ended HPS because it has an "insulating" layer around the arc tube?
 
Most hid bulb manufacturers don't recommend air cooled hoods..............If the air is cold enough it could cause a voltage drop on the arc. 400c nominal and 650c for de sodium arcs. Running ambient grow room temps over the bulb should be an issue though imo.

Yea but thats why the ac/de have the separate chamber to run the air above the bulb. Doest affect the bulbs, the video shows that. Some manufactures recommend 10% air flow which still doesnt work.
 
There is still some confusion on this,
So it is a no no to air cool the double ended HPS but ok on a single ended HPS because it has an "insulating" layer around the arc tube?

So the DE bulbs are nitrogen filled compared to the standard vacuum of a regular hps bulb. The vacuum is a good insulator and nitrogen is not which makes them sensitive to temperature change.
 
So the DE bulbs are nitrogen filled compared to the standard vacuum of a regular hps bulb. The vacuum is a good insulator and nitrogen is not which makes them sensitive to temperature change.

Their was a guy in here that ran cold outdoor air in his cool tubes, and he definitely noticed the mogul bulbs dimming...............switched to pulling it straight from his grow room==== problem solved.

yeah the ac/de hood is unique in that aspect, nice design. Is their a reason why you choose ushio over philips?
 
Their was a guy in here that ran cold outdoor air in his cool tubes, and he definitely noticed the mogul bulbs dimming...............switched to pulling it straight from his grow room==== problem solved.

yeah the ac/de hood is unique in that aspect, nice design. Is their a reason why you choose ushio over philips?


Ive just always used ushio for years now. Im sure they are similar, and probably no difference in results. Just have alway used ushio from the beginning
 
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