Design suggestions for 10KW bloom room

[The_Enthusiast]

Greetings, I am new to this forum but not to this business. For the first time I'm trying to build a room/place according to my needs/capacity (light, ac etc), because it’s a hassle to make every aspect optimal if you don't build it from scratch.
I used AAW (med+600W EM bulbs) before and I can say that I was never happy with light uniformity under one, I used a wide of bench designs and never had <10% uniformity (used it with and without „SUPER SHADER“) – to be honest it was sometimes <70%... in 0.8m x 1.4m…


That said I see that there are a few breakthroughs in last couple years, as 1000W DE lamps became more efficient than 600W lamps.


I'm leaning to Gavita all in one fixtures 1000W DE – the price is reasonable but 2100 uMol / 1055W of operating consumption is awesome (new Philips Led Toplight have 2.2 – 2.4 uMol/operating W – but are about 2-2.5x more expensive in the start).


There will be 4 “hydro systems” in different bloom phase.


Now the question:
Should I go again with reflector on bed design or better as Gavita is saying – lighting up the entire room?
What would be the best design for 10 x 1000W lights? What about the pathways?
I would like to achieve most g/W spent but uniformity is important to.

T_E

 

[Speed of green]

You have asked a very non specific question, there are many different ways to set up 10 gravitas. What "hydro systems" are you using?

A single 1000w gavita covers 25sqft or 5'x5' area. I would build a room that is 30x15 with the lights in the center, leaving a 2.5' path around the perimeter.

I would build custom flood and drain tables with epdm 2x6's and plywood. Tables would be 10x10 10x10 5x10

Then I would break out the rock wool cubes and run 30+ plants per light.

Don't fotget the trellis/stakes. Good luck.

 

[onavelzy]

what are the room dimensions?

 

[The_Enthusiast]

What "hydro systems" are you using?

I will be using custom (DIY)

PP tubes that are 110mm diameter, and on that drilled holes for 7.5 cm netpots. It will be a snake like design so I can fit it as I want.

It is a subsystem of DWC but it's a High Flow DWC because its about 7cm in water and about 3 cm air in tube.
I have better experience with that than with regular ebb n flow.

If you ever looked at the reflector light output it's not the same in every corner, middle, etc.

So I would like to build a room around Gavita lights and 1000W ones to be exact. I checked Gavitas documents they state that its best to build a room 5.5m x 3.6m with ceiling at 2.6m (light @ 2.5m about).

With 10 x 1000W lamps you get about average (with everything in 10% in same distance):
850 uMol @ 0.9m from floor
900 uMol @ 1.2m from floor
960 uMol @ 1.5m from floor

Is this two much light/would I be able to get around 1g/W? (as of now i never got more than 0.9g/"W" of 600W EM.

The systems would be 4.5m x 0.75m so about 3.375 m2 for every system and about 88 plants on the bed.

Systems would be on rails so there would be a passage of 0.6m and it would be "movable" so everything is kinda available.

I figured, in my experience that best things would be to take most advanced things from greenhouse business and apply it here. So i even started mixing my own nutrient solutions from purest and best sources of each element.

T_E

 

[The_Enthusiast]

Last BUMP, after that It's going to oblivion...

 

[elios]

pathways in the middle

 

[Lazyman]

Do you have a source for clones? How many you can get (how often) and at what price will affect your ability to grow. 30 plants per light would be 300 clones. I can get that manyfrom one place, but not everyone can.

10 light grows are a nice size, I have 5 of them technically. Flood and drain trays are easier to build and maintain. You can put 4 4x8 trays together as long as you can get all the way around d the outside on all sides. My 5th tray I put on casters so I can pull it away from the other 4, and keep my lights all together for better overlap. With trays the reservoirs are underneath the trays, so they take up less floor space.

Yes use Gavita DEs, great fixtures and bulbs.

Do not try and reinvent the wheel with nutes. Pick a line (I use h&g) or whatever is affordable, easy to get locally and popular. Popularity of grow equipment, nutes, soils etc means you can get more help and support, and your questions addressed easier. You start trying to experiment, you are on your own. Believe me, I've tried. Go with the flow, don't fight the system. Popular systems are popular because they're good and they work.

 

[Phaeton]

I just finished my third generation LED room. Light intensity is light intensity, 1000 umol at 5', 750 at 4', and 700 at 3'. I run fewer lights at 6 KW but keeping the intensity above 500 umol as an absolute minimum anywhere on the plant is not overkill. I have to use 2000 out of the 6000 watts as side lighting to maintain this level.

Overkill was 1200+ umol on the top buds, temperature and humidity were so critical the bottom half of the plant suffered. And the tops would usually bleach anyway.
The CMH end uses the 1000 umol, the LED side uses 900 and still puts a bit more energy into the plant.
I measure the sun during the summer and on a clear day in central Alaska the minimum reading is 2100 umol, double what I can effectively manage inside.

The intensity numbers posted are to be envied, pretty much spot on the optimum.

 

[GnarlsBarkley]

OP, I don't know if you've designed your room yet but you should really just follow the official guide from Gavita. It's what I've done.

https://www.dropbox.com/sh/92a7eyjkyyb77b7/AACTtwEa92PPUSqTwdcbY5Nka?dl=0

 

[The_Enthusiast]

Do you have a source for clones? How many you can get (how often) and at what price will affect your ability to grow. 30 plants per light would be 300 clones. I can get that manyfrom one place, but not everyone can.

10 light grows are a nice size, I have 5 of them technically. Flood and drain trays are easier to build and maintain. You can put 4 4x8 trays together as long as you can get all the way around d the outside on all sides. My 5th tray I put on casters so I can pull it away from the other 4, and keep my lights all together for better overlap. With trays the reservoirs are underneath the trays, so they take up less floor space.

Yes use Gavita DEs, great fixtures and bulbs.

Do not try and reinvent the wheel with nutes. Pick a line (I use h&g) or whatever is affordable, easy to get locally and popular. Popularity of grow equipment, nutes, soils etc means you can get more help and support, and your questions addressed easier. You start trying to experiment, you are on your own. Believe me, I've tried. Go with the flow, don't fight the system. Popular systems are popular because they're good and they work.

Sorry for late reply - i was very busy.
I think i got the sweet spot with this High Flow DWC I am already using (i tried from soil to ebb'n'flow and vertical to now this that I explained - so this one is best because no clay pellets and easy to build/maintain)
As of nutrients, I am mixing them for over a year.. I can hold my EC from 1.95-2.15 without nutrient burn (only in summer i have to lower it because my AC is on the weak side...)
I grow in SOG style for years now so it's not a problem to calculate veg room and everything.
The main concern is is it possible to reach lets say 500-600g /m2 sativa dominant strains.
Last batch gave me 550g dry under 2 year old 600W bulb (magnetic ballast) + medium AAW (110 cm x 80 cm growing bed)

I'm just interested from room lighting aspect is it better than growing bed method

 

[The_Enthusiast]

OP, I don't know if you've designed your room yet but you should really just follow the official guide from Gavita. It's what I've done.

https://www.dropbox.com/sh/92a7eyjkyyb77b7/AACTtwEa92PPUSqTwdcbY5Nka?dl=0

Yes, I downloaded all of theirs brochures/manuals and have v2 of my plan.

I am attaching revised version of my idea (this plan is in next 6-12 months so I am not rushing)