8k AC/DE Double Ended Grow
- Thread starter 707humboldt
- Start date
707humboldt
Well-Known Member
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
707humboldt
Well-Known Member
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
PSUAGRO.
Well-Known Member
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
707humboldt
Well-Known Member
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
These videos compares and shows par levels
707humboldt
Well-Known Member
Day 7 of veg, half the trellis is up
Sour D starting to bush out from topping, Everything has more than doubled in size in a week.
Sour D starting to bush out from topping, Everything has more than doubled in size in a week.
707humboldt
Well-Known Member
Thank you, thank you
Hot Diggity Sog
Well-Known Member
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.
PSUAGRO.
Well-Known Member
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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OneHitDone
Well-Known Member
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?
707humboldt
Well-Known Member
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.
707humboldt
Well-Known Member
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.
PSUAGRO.
Well-Known Member
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?
707humboldt
Well-Known Member
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
707humboldt
Well-Known Member
Cut some babies yesterday for another room and some deps...
707humboldt
Well-Known Member
Day 10 of veg, plants are healthy and get bigger every day! Finished the trellising, really happy with how it came out. I use to use pvc to trellis, I think I like this better.
marquezmurder
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See, This is as good as budporn.