Gavita pro 1000 DE or E pap

[ohgee kush]

Looks like the AC DE reflector did the best of the bunch.

AC/DE Reflector Review & Demo | Sunlight Supply's…:

 

[Theoneandonly Z]

now i am not saying im correct about this theory, but i believe that having a high umol/s count in a 4x4 is NOT the best way to look at this. Ive seen this study, but when i run these lights @ 2.5-3 feet above canopy, its overkill and i get light bleaching. i raise my lights up to get a spread of 6'x5' < this is where i see the best results. i would love to share pics, but i am involved in partnerships and i simply cannot post pics due to mutual agreements.. so i do apologize. Never the less, in our industry, less is more. I would not take these measurements into consideration due to the lack of plant reaction of each study. Yes they give the values at certain distances, but is it practical?? I do not know the answer for i have not run the ACDC, DE agrotechs, or the DE Awings with any plants, just gavitas and epaps for me.

Anyways, ive been in the hydro store industry for quite some time as well and ive seen factual sell pitches that really dont benefit a grow. so i am skeptic on this one. My understanding of these lights is that to achieve full benefit, one must utilize cross lighting, not direct light within a foot print. Jair from Gavita once told me, "you do not light a strict footprint, you light a room." so in other words, use the correct distance from fixture to fixture over total sq feet to achieve maximum lighting.

The new DE technology is pretty legit, but it was designed for big grows- commercial. they actually use it as supplement lighting and use the sun for the majority in big greenhouses in Holland. This tech has become very popular in the states, more than what was expected. might be the new trend for the next 2-3 years.

peace and love to you farmers.
time for me to fire one up.
:cigar:Z

 

[ohgee kush]

Theoneandonly Z helpful write up that you just posted

 

[Skunkmasterflex]

That sucks....i wanted to get 3 - 600 gavitas per 5x9 tent lol. Looks like that's not going down.

 

[Theoneandonly Z]

That sucks....i wanted to get 3 - 600 gavitas per 5x9 tent lol. Looks like that's not going down.

damn that would be nuts! it might be able to work for you if you kept your plants shorter and had real good air cooling. I know its a bit harder to cool a tent than a room..well for me atleast. honestly 2 1000's should be superior to 3 600w gavitas. Im a personal fan of running 600's in smaller spaces though, its way easier to hit gpw, but if u hit gpw consistently with thousies then you are already killing it!

 

[Skunkmasterflex]

damn that would be nuts! it might be able to work for you if you kept your plants shorter and had real good air cooling. I know its a bit harder to cool a tent than a room..well for me atleast. honestly 2 1000's should be superior to 3 600w gavitas. Im a personal fan of running 600's in smaller spaces though, its way easier to hit gpw, but if u hit gpw consistently with thousies then you are already killing it!

I recently just invested with a partner in a few new properties of the larger scale so for my little personal grow I wanted to kinda step up my game and get a little more fancy with it. It's only 2 5x9 tents. 8 inch everything with 2 1k lights in each and am using xxxl hoods (36"x32"). Iv been running 120 this whole time but am re wiring to 240 and putting a controller in for the 4 lights. Was also planting on getting a split ac unite to pump into the 2 tents. While I was in the process of all this I figured I'd step my light game up to gavita 600s. Was thinking 3 per tent so 6 total. My plants are usually about 36" high or so and I have my lights fixed up decently high. I guess I need to brainstorm this a bit better lol. Appreciate you dropping the info as I probably would have just gone out and dropped coin in the next day or so and probably got the wrong equipment

 

[Theoneandonly Z]

I recently just invested with a partner in a few new properties of the larger scale so for my little personal grow I wanted to kinda step up my game and get a little more fancy with it. It's only 2 5x9 tents. 8 inch everything with 2 1k lights in each and am using xxxl hoods (36"x32"). Iv been running 120 this whole time but am re wiring to 240 and putting a controller in for the 4 lights. Was also planting on getting a split ac unite to pump into the 2 tents. While I was in the process of all this I figured I'd step my light game up to gavita 600s. Was thinking 3 per tent so 6 total. My plants are usually about 36" high or so and I have my lights fixed up decently high. I guess I need to brainstorm this a bit better lol. Appreciate you dropping the info as I probably would have just gone out and dropped coin in the next day or so and probably got the wrong equipment

right on man, sounds to me like you already have a nice 4000w running. if you went with 6 600s you would be at 3600 watts. (i know watts is a poor measurement to use, more of a numbers/math thing) so technically, if you hit gpw, you would lose 400 grams, thats damn near a whole potato! and i love french fries if you know what im saying...

congrats on the newer projects bro, nothing better than designing a new spot. If you want any other pointers or advice, or even just a 2nd opinion, feel free to shoot me a pm, im limited to what i post publicly. My .02$ = save the cash at your home spot and invest that into future production!

 

[Skunkmasterflex]

right on man, sounds to me like you already have a nice 4000w running. if you went with 6 600s you would be at 3600 watts. (i know watts is a poor measurement to use, more of a numbers/math thing) so technically, if you hit gpw, you would lose 400 grams, thats damn near a whole potato! and i love french fries if you know what im saying...

congrats on the newer projects bro, nothing better than designing a new spot. If you want any other pointers or advice, or even just a 2nd opinion, feel free to shoot me a pm, im limited to what i post publicly. My .02$ = save the cash at your home spot and invest that into future production!

Thanks buddy :)

I havea feeling ill be hitting you up in PM for more help lol. Thanks for all the useful info so far man

 

[fishwhistle]

Z is giving you guys great info here,this is coming from someone who had to learn it the hard way. i would never recommend 1000 de bulbs with less than 10-12 ft ceilings,i had them in 8' and it did not work out so well.Gavita will be releasing a 750 de at some point and that may help some but that is yet to be seen.

 

[slumdog80]

Stay under 10 day veg or scrog, 8' ceilings are fine. I would hate to see someone write off getting DE's completely because
they do not have 10' ceilings. Just sog or scrog and keep bulb distance at 40". 6000 btu's per light is the minimum though.

 

[ohgee kush]

Stay under 10 day veg or scrog, 8' ceilings are fine. I would hate to see someone write off getting DE's completely because
they do not have 10' ceilings. Just sog or scrog and keep bulb distance at 40". 6000 btu's per light is the minimum though.

Do they run that much hotter then HPS bulbs

 

[wobbly goblin]

the electricity is being converted into light and heat so...
if the de bulb is more efficient at producing light per watt?
logic would dictate that it would produce less heat


fwiw

 

[Theoneandonly Z]

Do they run that much hotter then HPS bulbs

this depends on your environment imo. they do run hot dont get me wrong, but when i switched to these fixtures, my AC has reduced its work load quite a bit. I believe this is do to the space between canopy and bulb. That and with the ePaps, the hot air is not entrapped as much as gavita and vents directly to the top of the building. <this is where i have exhaust fans hooked up to a high temp and humidity controller. They kick on and exhaust when needed. My AC is legit enough to cool with out exhaust, just made it multi purpose. Since your @ 8' ceilings, you dont have much space for the heat to travel, so in return your grow space will become heated much easier.

 

[ohgee kush]

You do think a 18000 btu mini split would be able to combat the heat of a 4000k run weather it be HPS or DE uncooled?

 

[tags420]

Plant growth and yield is directly related to light photons received(regardless of spectrum basically, look at quantum yield)...and that is measured in µmols. Though the sun hits 2000µmols, but only about 800-1200 peak is the desired ideal range for high light intensity crops indoors and greenhouses. Are favorites plant MJ is no exception to this documented growing science. And if you are able to maintain a constant intensity over the whole canopy you could do with even lower, but to get full coverage with a single light source, hitting the higher end peak to make sure the edges get intensity is how it's done. But in a green house they can avoid higher peaks because the lights are so high they get ditibuted better...but he goal of a certain µmol over the entire canopy is still their goal.

As far as that par and spectrum test go...I don't see how they don't help you as a reference. It is still a very accurate way to show which system is putting out more light/getting it to the canopy better. Plus the results should translate for your situation as well, considering you raise it compared to their test...not just use it over more from the same height.

I understand you have had personally experience with them bleaching and that is where you are coming from. I have emailed a bunch with gavita and talked to them at max yield shows...Gavita recommends 30"+ over the canopy for medical marijuana specifically and they say they have found a linear increase in yields up to about 1000µmols-1100µmols...after that is the point of diminishing returns...then total saturation occurs at 1500-1700µmols. I have done µmol test myself on my last 3 crops and they have agreed with/matched gavitas findings.

 

[indogro]

If I were setting up 20- 1150w Gavitas in a room.....4 rows of 5.....2 rows pushed together on each side with an aisle down the middle.....what is the best center to center layout for these lights turned up to 1150w? 5x5?

 

[GR33NL3AF]

Z is giving you guys great info here,this is coming from someone who had to learn it the hard way. i would never recommend 1000 de bulbs with less than 10-12 ft ceilings,i had them in 8' and it did not work out so well.Gavita will be releasing a 750 de at some point and that may help some but that is yet to be seen.

My shop is on the list for the first shipments of the 750;) Giving it serious consideration..

 

[ohgee kush]

@GR33NL3AF
You should try them out and post your experience with them.

 

[GR33NL3AF]

Id love too - I'll certainly keep the forum posted when they come in...

 

[Capulator]

absolutely, the biggest misconception of running DE fixtures @ 1000w is the distance one needs between canopy. These fixtures put off very intense light. you will burn your plants if you try to place them too close to the plant.



to be very honest. You do not have the right specifications to run these fixtures.

+These lights have optimal cross lighting and this is one of the greater features. But to achieve this benefit, you must run more than 1 fixture. Even 2 is not suggested, but its much better than one.

+These lights need to be much higher than a normal bulb and ballast combo, this is do to the high PAR rating, its over kill in a small light foot print. I recommend 4'-5' of separation between canopy and bulb. If this is not applicable, then you gotta dim your lights to around 750-825, possibly more in your case due to only 8' ceilings.

+you can use 3 Gavita/e-Paps for every 4 1000w SE fixtures. but this only makes sense if you run your tables 16' long.

IMVHO, i would recommend the Gavita 600w fixtures. they are bad ass. MWD has a sick thread of his grow with them, dude killed it. you can easily run 2/table. Not too mention they are a bit cheaper than the 1000's too.

hope i helped out a bit, sorry for the bad news. If you doubt my word, feel free to pm me and i can shoot you a couple links and phone numbers of the reps who supply these lights. much luck. Z

I am still bleaching tops at 3' away with the 600's on some strains. You don't need more than 600 with an 8' ceiling, unless you plan on getting a taller place in the future. If you do, get the 1k fixtures and simply dim them down.