Flower Room Build, input on final variables.

[MedResearcher]

Hey All,

Finishing up a design for a new flower room. I have been on a long outdoor binge, but I am now excited to get back into indoor growing and try out the new double ended lights everyone is raving about.

Just to warn you, my threads are always boring and die quickly. I mainly post to get some input and feedback and occasionally try to share some of my failures in hope that it may help someone avoid the same mistakes.

Some of the variables for the new room build are already set in stone, cant and wont be changed. Although the last few specifics have some wiggle room so I am hoping I can get some input on them. Specifically since I have never ran Gavitas and it seems they are a bit of a different animal than the older HID lights.

To get to the point... a list of what I cant change about the room:

3 Ton (36k btu) Mitsubishi mini split

50 AMP 220v dedicated circuit separate from the AC

Bottled Co2

10' 6" - Width

10' - Height

x' - Length

Plant Count is non factor.

Flower room is dedicated to only flowering. Have a separate Veg/Propagation room.


The room will be fully sealed, and the length is an undetermined variable. I will be building a new wall, once I decide on the final length. Also I am determined to try out the new DE Gavita Pro's. Although I am undecided between the 1k Gavitas or the 750w Gavitas.

So basically the main decisions at this point is the length of the room, and the amount, power of the light fixtures. From some rough research I think I have the amount/power of the lights narrowed down to either 6x 1k's, or 8x 750w based on my AC's power. Originally I had thought I could get away with 8x 1ks, but after some more reading I think the AC might struggle with that.

With the 10' ceilings, I think I can get away with the 1ks, but its hard to say if it would be easier to get to a better yield with more 750s. Also with the rooms width set in stone, I need to figure out how to utilize the space efficiently compared to the lights footprint, while also being able to move around and work a bit. Might build moveable low profile tables with castors to help with moving around.


Thanks for your time,
Mr^^

 

[RiddleMeThis]

Take my advice with a grain of salt, as im still trying to re-figure all of this out as well.

Based on what ive been reading about DE fixtures, and your wanting to run 6 1k's, id say 15 feet in length. 6 lights covering 5x5 area, should be solid?

I also agree with your ability to get away with the 1k's with that high of a ceiling. Your reflectors are air cooled, right? Whats your ventilation look like?

 

[MedResearcher]

Thanks Riddle,

Lights aren't air cooled and the room will be sealed with no ventilation. AC for the temps, bottled Co2, and dehumidified.

15 Feet sounds like a good start, might add a couple extra feet so I can have a little work room on the one side at least. I do like the idea of having wall to wall canopy and getting good reflection from the walls.

The electrical was ran years before the Gavita Master Controllers, so I have a single 50 amp 220v plug, which I am a bit bummed about now. Seems since the master controller is the timer, there is no need for a single timer board, would have been cleaner to just run individual plugs straight from the sub panel for each fixture. Have to decide to use a redundant timer board with sloppier wires, or redo it.

Appreciate it,
Mr^^

 

[coldcanna]

Without knowing anything about your climate or building, the general rule of thumb is 4-5,000 btu for each light so your looking at prob a max of 6 or 7 lights, say 6 to keep a symmetrical shape unless you have the length of the room to go 7 in a straight line. With the Gavitas I've seen people do 6x4 and 5x5. If your room is 10 ft wide then that leaves you with the one option of going with 2 rows of 3. So to give you some wiggle room on the outside of the canopy you'd prob want to have the room around 20ft long.

50 amps is a little tight though, is that for all your equipment or just the lights? 6 lights is going to put you around 35amps give or take which only leaves you 5 amps to run your equipment and I know that an AC and dehuey will blow by that number

 

[MedResearcher]

Thanks for the input Canna, it would be nice to have some work room at least on one side. I still have a little time to decide but 6x 1ks and 20' seems like a good plan. Surely need some extra space for the tanks and dehuy to sit at the least.

The building has 200 amps total, the AC is on its own circuit, and there is at least an additional 15 or 30 amps of 110v wall plugs for some extra fans/accessories. So we should be good on power, just need to make some final decisions on how to arrange it. Might get a bid on rearranging the wiring. I would prefer to have 6 single plugs for each of the 6 lamps right in the ceiling near the fixture, as opposed to have a 50 amp plug with a timer board and stretching the plugs across the room. Planning on hopefully using the room for a long time, so it might be nice to get everything perfect and as clean and as safe as possible.


Mr^^

 

[Picarus]

you can run two rows of 3 like stated above with a very small space off each side wall an a middle aisle . I have a room with 3 1k's over 16' of canopy and have gotten great results. Mount the lights properly to get the correct footprint. Mount your dehuey up above to allow gravity drain. Bottle should be outside of room. With the dehuey and 6 1ks you will be pushing that AC depending on insulation and how hot your room gets from outside variables. I would still stick with the 1k's as they can be dialed down in the summer and run full in the winter. Good luck!

 

[MedResearcher]

Thanks Pic, a bunch of helpful input in your post. Had a couple questions about it to, if you don't mind.

When you say mount the lights properly, are you referring to the right direction, as in the lights don't have a perfect square footprint, but more of a rectangle. So down the row of 3 they should be side by side and not end to end?

Putting the bottle outside of the room, sure would make it easier for bottle swaps. Besides ease of swaps and saving some space any other reasons why you have it outside?

Mr^^

 

[Picarus]

Yes rectangular footprint, the reflector allows a 4x6 footprint but I see so many people mounting them end to end over their canopy. If lighting the whole room as recommended by gavita then it works either way but in most cases lighting is still hung over the rows and you want the advantage of the overlap.
Bottle outside for space savings mostly. Every little space adds up and ease of work flow his paramount even in small spaces. Exchanges are usually done during daylight hours, so outside means you don't have to enter the flower room.
I would also mount a carbon filter to the ceiling. A recirculating filter in the room actually does a lot to contain smell.

 

[MedResearcher]

Thanks again Pic, appreciate the help.

Starting to run into a bunch of complications, and I am still only planning. Luckily smell mitigation is non factor here, so I can be lazy about it.

Mr^^