4 SF1000 in a 2x2x5 Tent.

I'm making my first attempt at a perperual harvest and I've currently got 8 plants that are about a foot tall each, inside my flower tent, and 10 plants in veg growing to height.

Once the flower tent is full it should be feeding light to 16 plants every day at between 12 and 16 inches distance from the plants.

All this considered I dont feel confident that my the 2 SF1000s are doing quite enough, 3 weeks in they look good but not great. It doesn't seem like im getting the even 1200-1000 PPFD spread across the entire tent like I want.

Looking at the sizes of the SF1000, SF2000, SF4000 the best way I can see to maximize the amount of lights in the tent while still fitting in a 2x2 is by adding an additional 2 SF1000s with a slight tilt to accommodate the space.

If im looking at it correctly without any real understanding I think that will let it double up on light in any negative spaces giving me an even spread on each plant. That being said I have no idea how to calculate PPFD or how it works when you take individual outputs and put add them together.

I'm confident I can easily handle the extra heat, but im unsure if this is going to give me dense buds, bleached buds, or bad buds.

Would this be too much light, or not enough?
Anything helps. Thanks guys.

I think at the stage of development, 12", one would enough, 4 at full is absolutely too much.
1000-1200ppfd at that size of plant is not going to work well, maybe a 3 feet plant with 5 gallon roots in hydro. Whats your temps? Do you get purple stems?
16 plants in a 2x2? Too many.
Maybe some pics could help?

Unless you are running Co2 1000 ppfd is too high at any point of growth.

I am getting purple both in stems, leaves, and buds.
I currently have 8 plants in here now at the varrying heights you can see.

I Nutrieunt burned the middle 2 a but brought them: the middle 2 have also been in here 1 month. The only problem I've seen so far is what I consider somewhat loose buds.

With the addition of the new lights im running 82F-68F and 33%-37% humidity. The plants seem to be doing alright but only time will tell if they start burning/bleaching buds, or if I lose progress once I add the additional plants.

400w is way too much for a 2x2. You want 30-40w sq ft which is 120-160w. If you keep all 4 lights in there I would dim them down to ~40%.

You also have some other issues going on. Appears to be some lockout from either overwatering or over fert/ph. What soil are you in and how much are you feeding?

I have a 2x2 and I also run an sf1000 in it.. if a 2x2 tent is what you think is good to flower in with 8+ plants.. the problem isn't the light spread/PPFD... you're expectations are way too high. You have enough light to run a 4x4 tent in flower.

I will pull up a chair as you roast those plants.

MrJones07 said:

With the addition of the new lights im running 82F-68F and 33%-37% humidity. The plants seem to be doing alright but only time will tell if they start burning/bleaching buds, or if I lose progress once I add the additional plants.

Click to expand...

PS.
Gotta know your limits. This is my current situation. 3 plants. 3 panels of light (1 panel each plant) I can throw plants in 3 gal pots and run 10 in there... but why? When I can probably harvest more from 2-3 plants?

The idea is a perpetual harvest, so the amount of plants is directly linked to the size of the plants.

I can easily grow larger plants, but what I'd rather harvest sooner with minimal risk, if one plant dies I still have 7-15 more.

The nutrient lockout is purely my fault. When I was running less lights I added far too much nutrients.

As for the intensity of the light, I have definitely used the dimmer switch to its full advantage, it stays at about 60% but I do intend of testing out higher amounts of light as I fill the tent.

I have enough lights for twice the area, but my goal is to get the most even spread of PPFD across the tent, then dim to the appropriate light level.

The main reason I'm concerned about that is because I'm running a perpetual harvest SOG and I want the same quality across the board.

At what point do you put the plants in that tent? Seedling? A couple of weeks vegg? If they are just 12/12 from seed you need to rethink. 240w in a 2x2 is way too much for small plants. Id do no more than 150 for the whole tent, and even so its too much light for a seedling. You might wanna up the rh a bit aswell.

I've always thought the sog method was funny. A bunch of small plants, typically going way over the plant count their alloted. I know alot of people don't care about that. I'm in 3x3 tents for veg and flower. I have 3 plants filling out the 3x3 flower tent now. My next round will have 4. I messed up and started too many seeds last month out of boredom lol

But that really is an absurd amount of light for a small space. Use 2 of those lights for veg or growing another tent. Really look into a bigger taller tent.

Are you supplementing any co2 ?

After getting busy I kinda forgot about the post. The plants have been doing great with the 4 lights at 60% and have been forming conas that take up pretty much the whole tent.

That being said 2 lights at 100% does about the same with about a 5 degree heat difference and keeps me perfect between 75 and 65 through day and night cycles. 2 seems to be the way to despite the visual difference it makes.

I take clones after 3 weeks in flower (specifically to get bustier plants) and veg them for a 6 weeks after rooting. 2 weeks under 1 SF1000 at 12 inches to grow to 7 inches tall, then they move to a 24x24x48 and sit under 2 SF1000s for 2 weeks at 24 inches until they are about 15 inches tall then into flower for full stretch where I had 4 SF1000s at 24 inches and 60% and 82 degrees.

Each plant harvest in about 4 months and has been running a pretty tight schedule to begin harvesting every month between multiple flower tents.

I'm considering cutting everything down by half.

My main concern is harvesting quality bud quickly so using SOG has been nice in the way that losing plants isn't much of an issue. Within my 24 plant count I have 8 in flower 8 in veg, and 8 freshly planted cuttings, so its helpful in the way that once one harvest is finished another is right around the corner with another lined up after that.

Initially I had 8 plants at a foot tall in 1 gallon pots at first I was fearful of size but after toying with extra plants I quickly realized each plant can easily grow to 3 feet tall and 6 inches wide in coco coir. That means I could do 16 plants at 3 feet tall a peice off 1 bag of coco coir.

This harvest running the 4 SF1000s im anticipating each 12 inch plant to harvest an OZ of bud, and a half pound between the 8; the 3 foot tall plant growing in the same conditions is expected to harvest a quarter pound.

All this is currently theory, but if im able to pull it off it will result in 4 pounds a month out of a 2x2.

And no, I have not been using CO2, but it strikes my curiosity.