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New gavita 750 DE fixture and lamps

  • Thread starter Thread starter fishwhistle
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New gavita 750 DE fixture and lamps

fishwhistle 85 Replies 60,031 Views
Page 3 of 5 · Replies 41–60 of 86
#41
MidniteGardener said:
Yeah, not sure about that either but it's better than nothing. I imagine there's more heat buildup if you keep the glass on.

I've got a couple questions for you Cap. I saw in another thread you said the Gavita 600w fixtures could still burn your plants if they aren't high enough, and the 400v 600w GP bulbs might beat a traditional 1000w. Would I stand to gain any by using the Gavita remote ballasts with 400v 600s inside my blockbusters, or is it more the hood design that causes the Gavita to be so intense? I currently run 2 blockbuster hoods with 600w lumateks inside a 5x9x7 grow tent. Occasionally I use the 1000w setting in flower.

Also, do you use the Pro 1000w ballast and just keep it dialed down to 600/660 for the single ended bulbs? I'm thinking if I did this it would be an easy upgrade path once they release the 750w DE bulbs, unless you think the 7' ceiling is way too low for either one.
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It's the bulb not the hood. I am running a vert room with bare bulbs where I converted all my 1k to these 400v 600's and there has been no difference in growth rate or plant health. Buds are forming nicely. Looks like I still have 1ks in there.
 
#43
Thats awesome that you can run 600 DE bulbs and get the same performance as a 1k
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Yeah I've been trying to find a way to use 600s instead of 1ks because of the height restrictions of the tent. I was reading some posts from whazzup and he says the Pro 600 will cover about 3x3, but the Pro 1000w covers up to 5x5. I would try Pro 600s in my 5x9, but I'm not sure it would cover the 5ft width properly. I used a calculator on the e-papillon site and it says I would need twice as many 600w fixtures to cover a 5x9 compared to 1000w. The idea is to shoot for 1000 micro moles of coverage.

http://www.epapillon.com/index.php/estimate
 
#44
The gavitas do not throw a square pattern of light MG,at least not with the gavita reflector.The footprint of a 1000 is more like 4x6.Alot of folks are running three 1k gavitas over a 4x16 area that used to take 4 standard 1ks to cover.I dont know about the 600's but i do know MWD seems to do very well with them over a 4x4 area which would make sense,ive never seen a 1000 and a 600 side by side but they seem to Have the same hortistar hr96 reflector?If they are the same the 600 should have a similar rectangular light pattern with less intensity.
 
#45
fishwhistle said:
The gavitas do not throw a square pattern of light MG,at least not with the gavita reflector.The footprint of a 1000 is more like 4x6.Alot of folks are running three 1k gavitas over a 4x16 area that used to take 4 standard 1ks to cover.I dont know about the 600's but i do know MWD seems to do very well with them over a 4x4 area which would make sense,ive never seen a 1000 and a 600 side by side but they seem to Have the same hortistar hr96 reflector?If they are the same the 600 should have a similar rectangular light pattern with less intensity.
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You're right they don't throw a square pattern. I checked out MWD's journal with the 600s. He had them over 3x3 beds (prob 4x4 canopy), plus he had multiple rows next to each other so you get extra overlap there.

The hortistar may throw down about 4x6 pattern, but the effective area where you get optimal PPFD with the 600w is still about 3x3, or 4x4 optimal with multiple reflectors overlapping. Once you get outside of that, light levels and uniformity drop fast. So in a 5x9 tent with 3x Gavita Pro 600 I would have very good intensity and uniform light down the middle, but not enough as you get towards the edges of the 5ft width. Then again, I may only use about 4ft with my canopy instead of filling it wall to wall like I have in the past.

I still think my 2 dimmable 1ks with Hortilux inside blockbusters would actually beat 3 Gavita 600s, but I could be wrong. I'm keeping an open mind and I may get a light meter and try it out down the road.
 
#48
What do you guys think would work better...?

2 gavitas over a 5x10 turned up to 1150

or

3 gavitas over a 5x10 turned down to 750
 
#49
Depends on your ceiling height I think. But 750w isn't going to really cover 5 feet wide, more like 4x4.
 
#50
legaleyes13 said:
What do you guys think would work better...?

2 gavitas over a 5x10 turned up to 1150

or

3 gavitas over a 5x10 turned down to 750
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Neither... the 1000w covers a 4x6 area and the 750 is closer to a 4x4... You may consider the Agrotech:

or the A-wing DE:
 
#51
GR33NL3AF said:
Neither... the 1000w covers a 4x6 area and the 750 is closer to a 4x4... You may consider the Agrotech:

or the A-wing DE:
Click to expand...

The agrotechs are absolutely what I had in mind, but I don't wanna deal with EMI/RF noise, so I prefer the all in one units.

I'll just wait for other's to use the units that aren't attached to the ballasts, and if I don't find any complaints of rf noise, then I'll feel more comfortable about the agrotechs.
 
#54
honestly didn't even consider it since I don't think I could use the full power right now. It actually makes sense though for future possibilities, thanks for questioning it. Is there any change in spectrum when dimming like I have read about normal HPS? @Venom818
 
#55
QLTYlab said:
The EMI/RF noise drives me nuts! @legaleyes13 can't wait to convert to the Gavita 750 once released.
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What lights and ballasts are you using exactly? gavitas with unattached ballasts?
 
#56
Surely no need for this as stated, 1000de can dim below, 750watts.
No brainier
 
#57
legaleyes13 said:
What do you guys think would work better...?

2 gavitas over a 5x10 turned up to 1150

or

3 gavitas over a 5x10 turned down to 750
Click to expand...

I've used two gavitas over the same space without a problem, they cover a lot more than I thought they would, I used orca reflective sheeting with it and I couldn't go in the room without shades on, personally I'll only use the pro1000de because if it's warmer just turn it down, I've had one in a 1.2x1.2 on 1000 for most of the crop, had 4 plants in there, no heat issues, only had an 6inch outtake too, just had the flaps open at the bottom
Image
Image
 
#58
Dimming a 1000 is not as effective as right sizing your fixture or gavita would never have made 600s or 6/750s.From gavita,
''The Gavita Pro 750W DE EL lamp for our Pro 6/750 DE FLEX fixture. It is a unique lamp in its class, the first 750W electronic HPS lamp to hit the 1500 micromol level. Many climate rooms do not have the height you need for 1000W lamps, or the crop is too high. A 750W lamp works much more efficient in the 600-825W range than a dimmed 1000W lamp.''
When you dim you change the bulbs spectrum considerably.I was told a little dimming(up to 10-20%)was ok as spectrum didnt change too much but after that it falls off considerably and you are better off right sizing your fixture.
 
#59
I have always held on to the very basic fact that to use the Gavita DE 1000 fixtures you need to have 9'+ ceilings because of the intensity these things throw out. I have mine in a Gorilla tent with extensions to take it to 9' and I gradually increase the settings until day 60, by then I am in the 1000 setting and for the next week or so (I always take my grow to full ripeness and since I am the only customer there is no rush, I go normally to 9-12 weeks for that blackout brain melting couch locking goodness). On my week to 10 days, I change the setting to the 1150 for the second half of the 12 hr light cycle. So 6 hrs of 1000 and 6 hrs of 1150 then lights out. This gives me SUPER HARD bud all the way down to the bottom of 4-5 ft trees in my UC 4 banger. I cannot stress how awesome it is to harvest and not see ANY larf. Even the stuff I save for extract would be considered good quality. I have another 1' extension for my tent to take it to 10' and may do that when I overhaul my system this year for more automation. But you have got to respect the power of these fixtures that is for sure. I like the 750 flex for the exact purpose of those that do not have the 9'+ head room for a 1000 to be able to take advantage of the tech. What I am seeing are a lot of novices to this tech make huge mistakes in buying the 1000 rig because their ego will just not allow them to drop wattage to the 750 flex unit. As if in doing so it makes their BIG AMERICAN PENIS shrivel up and fall off and their grow will suffer for it knowing full well that you cannot use these things under 8'.
 
#60
half baked said:
I've used two gavitas over the same space without a problem, they cover a lot more than I thought they would, I used orca reflective sheeting with it and I couldn't go in the room without shades on, personally I'll only use the pro1000de because if it's warmer just turn it down, I've had one in a 1.2x1.2 on 1000 for most of the crop, had 4 plants in there, no heat issues, only had an 6inch outtake too, just had the flaps open at the bottomView attachment 494227View attachment 494228
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That plant is huge! And your avatar is insane.
 
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