2600 watts. Bad results

So i have 2 1k lights and one 600w light. These plants were vegged for over 2 months and in 15 gallon pots. My problem is I'm only getting 5.1 oz off each plant and i only have 5 of them. So I'm not even getting .5 gpw.

I'm using hydroponics research nutrients. Everything is dialed in and the plants had no stress problems. Only thing I'm lacking is mylar on the walls. Is it i just need more plants? The whole space was filled out.

My air-cooled lights are standard as well. Not the xxxls. I can update with pics if needed.

It could be the strain. I have had plants that are slow in veg and are just slow growers. I haven't heard of those nutes. Have other people had success with them?

Yeah my local grow store guy said he uses them all. And was on advanced nutrients for a few years but switched to this and never looked back. Its only three parts.

I grew this strain last year or the year before and i only grew one of them and it was 9 ounces. And that was in a tent.

My past grow had the same problem with only getting less than .5 gpw.

I only have 5 plants under all the lights. (To stay legal)

But i see other growers getting over a lb per light. These plants were over 5.5 ft tall. With at least 7 colas. Big bushes.

Did you bother with a SCROG? Topping and supercropping? Did you think ahead and clone these in flower?

And how old the bulbs you're using? What brand?

if you're not wanting to train I would probably do smaller pots and up the count.

Oh no they are trained. Topped multiple times.


And about the bulbs. That was my thought to as they have three flowers on them. I actually just ordered new ones.


I take clones off each plant before throwing into flower. So i always have 6 plants flowering all year at all times. So the 6 plants always have 2 months to veg.

I can't up the plant count because it will not be legal here in Michigan. So I'm stuck with doing 6 plant a grow.

got any pics?

Yes. If you look under my content you can see the whole grow. When I'm out of work I'll post some pics up of the final product. It's only been curing like 4 days. I have one plant left to cut down and it's just sitting in the dark right now because i have 6 plants already in flower. Will be taking clones today so they can veg for 2 months.

hotrodharley said:

And how old the bulbs you're using? What brand?

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The brand of the bulbs are horticulture.

Eye Hortilux i meant.

View attachment 4171583

Anyone have an idea of what's going on here. The brown spots happend over night. Day 4 of flower.

Dankstankfromdownstairs said:

View attachment 4171918 Anyone have an idea of what's going on here. The brown spots happend over night. Day 4 of flower.View attachment 4171920

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What is the medium your growing in?

Heres what I would do. YMMV.

#1 I agree it could be the strain.
#2. I would use a strain that has strong side branching, stretches a good bit a flip, and I would BEND THEM, vs Topping them, and train all of the side branching to grow Vertically. This opens up the whole plant, and IMHO, if the strain is nice and branchy, if you top it ect, all youre doing is slowing it down. IMHO/YMMV.

When you cut that Main Tip, you are greatly decreasing/slowing Vertical Growth... Lateral if you are bending them, and training them to grow Laterally vs Vertical.

Bending has basically the same affect as topping them, but you don't muck with the tip, and halt upward progression.

I don't mess with the tip, unless Im trying to slow growth. I bend starting at 20% to 1/3rd of the way down the plant, and I start training very early. Month, or less. If they start developing good side branching early on, I start training them then. By not concentrating on the tip, I keep the growth going quickly, adding side branching, that is really growing Vertically, as it lengthens.

You have to pull the small secondaries around the Main Stem, to make them grow Upwards/Vertically, and make the main tip grow Horizontally

I want the plant close to growing at 10-25 degree angle degrees Vertically, and train all the side branching to Major Branches. I also Shake my plant, and slightly Pull them a bit by the main stalk, and also bend around a bit on the secondaries to make them stronger. But after they are doing what you want, you don't have to mess with them anymore.

#4.. Id go to 20 Gallon containers... What is your soil Mix???

For Medium to use with chemicals... I like either Promix BX, or Promix HP. The BX holds a bit more water, and HP is lighter, and has to be watered a bit more often. I use the BX. Both work.
I also add 34 LEVEL TSP of Calcitic Lime, and 17 LEVEL TSP DOLOMITE LIME per 3.8 cu/ft Bail Promix BX.

#5. Id ditch that fertilizer. Their formula is not specific enough, and from what I can tell is not optimum for marijuana.

Going by Tissue Analysis, and from a company that has been making PLANT SPECIFIC FERTILIZER since the 70s, ( CHEM GRO ) says the optimum formula is

19.5 x 20 x 39. With increasing needs for Magnesium, P/K/Nitrogen at certain stages. For an 8 weeks strain they need more Mono P/K at weeks 3/4, and Increasing needs for Magnesium until week 6, but still is only backed off a small amount. Same for Nitrogen. Increasing Need.

FAKE NEWS WEED HAS LESS NEED FOR NITROGEN IN FLOWERING. IT NEEDS MORE OF EVERYTHING.

Weed likes 2x the amount of Potassium vs Nitrogen, and only slightly more Phosphorous vs Nitrogen.

Its also a MYTH that you need to reduce Nitrogen in Flowering, and is Illogical.

While it is true you can muck them up with TO MUCH Nitrogen, it is Critical in bud formation, and growth/stretch during flowering.

In a Human Being when we Eat Protein our bodies turn this into... NITROGEN, and keeps us in an Anabolic condition. AKA Positive Nitrogen Balance... If you are Low on Nitrogen, ( Catabolic ) you will use your own muscle tissue/glycogen/brain glycogen for energy, and is why many get a headache if they don't eat. rain is the first energy source. The Muscles/Protein.

Think of this.
When people lift weights, Run, or exercise in general ect, the demand for Protein goes up, because your body/muscles will be under stress, growing, and need Protein to Maintain, Repair, and Grow.Its not all you need, but is crucial
Protein in Latin means... Of First Importance.

The plant bypasses the protein conversion stage, and is fed straight Nitrogen.

I myself would use Chem Gro If I was going to use Hydro Chemicals

The have

4 20 39... Base

15.5 0 0 Calcium Nitrate.

Mono Potassium Phosphate 0 52 34

Buy Epsom Salts Locally.

Cheam Gro has an Exact Feed Chart for an 8 weeks flowering strain, and is easily lengthened, or shortened to suit your conditions.

I would also recommend using Dominion Seed Company

Dominion Skunk for fast growing, Sativa Dom, Med Heavy, Heavy Yielding plants, for an Indica Dom strain, and the Granny is Indica Dominant. These are also done in 54-66 days.



If you don't get at least close to 3lbs Ill eat your shoes. If the temps aren't to hot.. Over 84, and you also need strong fresh. airflow. I would space the 1000w Hortilux 4 feet from Bulb to bulb center, and 3 - 3.5 feet for the 600w. I would also keep the lights 24 inches, or closer if possible.

In the right season, I can get 1000w no more than 18-20 inches with good Airflow, and Ventilation.

I also would use at least 3 really really good fans for air movement, and make sure all the plants have some movement. I don't beat them to death, but if theyre aren't moving noticeably, I don't stand for it. I run the air between the Canopy, and the Bulbs, of which I also use Hortilux HPS Bulb 1000w. I also veg with 1000w, and all my seedlings ever know is 1000w. I use the 1000w for seedling at 24-30 inches. I start in 32oz Uline Deli Containers. Also have a fan on the seedlings.
Fans are on 24 hours a day in flowering too.


Chem-Gro | Hydro-Gardens
https://hydro-gardens.com/product-category/fertilizers/chemgro

Alright so final yeild was about 4.5 oz off each plant after dried and that is 5 plants. Which i don't get because i have gotten 8 or 9 oz off just one of these plants in the past.

I'm using ocean forest with perlite mixed in. I checked all the roots in my 15 gal pots and there was no root bound. It seems as if the plants had just enough room. Do you really think it's benefical to run 20 gal pots?

I'll be buying chem grow today as they didn't have my other nurtients in stock for a few more weeks. So figured its a good time to switch it out.

I'm buying more seeds for my next next grow because i already have more lemon Jeffery cuts going.

And I'll try out the promix as well.

I think I'm taking out my 600 watt light and putting it in the veg room instead of my LEDs..I'm going to try and get the plants as big as i can for these two months.

And when you say bending and no topping. Won't this still result in only one main cola? I top at least three times during veg in the past.

A 15 gallon container is a good size container. Just make sure you get all the soil possible into it, and don't skimp. 15g is great. Will produce a productive plant. But always remember. More Soil = Bigger Plant potential.

NO. All of the secondary branching will form huge colas. IMHO topping only slows them down, and mutilates them. Not a fan of topping.

I also Shake my plants vigorously, but not ebough to damage them. I try and make them as strong as possible.

I run fans 24 hours a day, and all plants have to have movement. Not beaten to death, and wind burned, but they have to be moving. This also makes the plant much stronger/bigger stalk/stems, which = bigger buds.

#1. Us a strain that's known to be branchy.

If your plants weren't rootbound its no wonder they didn't get much.

Even in a 30 gallon container, my plants are rootbound, but theres so much root, it causes no problems.

If it wasn't rootbound, it couldn't have been using much water, or food, which equals low production.

A plant has to be really using water, and visually growing daily, or IMHO you've got the wrong strain, or something is off.
We wont use any strain that wont produce at least 1lb per plant/1000w Hortilux/20 gallons soil.

Strong light early on brings out secondary branching early on. I start seedlings under 1000w Hortilux, at 24 inches. So theyre exposed to bright light from day 1.

I also wont use a strain that shows no early branching pattern.

I look into Dominion Seed Company Dominion Skunk, from SeedsHereNow. POTENT, Fast growing, easy to bend, and huge production. But theyre not cheap.

If you correctly Bend/Train your plants, you will also manipulate the smaller secondaries and bring them around the main stalk to orient them UP.

After you get the plant(s) trained, when theyere bigger, theres no way in hell you will be able to find the Main Tip, as it will be 1 big Beachball Hedge/Forsythia Bush looking plant. If not, its not trained right.

All the secondaries with turn into... MAIN TIPS.

Bending has basically the same affect as topping. Bending forces the hormone Down, and energizes the Secondaries. And bending 1/3 down vs just bending the tip, will allow the tip to keep growing, and adding secondary branching, whcich will turn into mains. If you cut the tip, the main stem is GONE.

Its also possible to mess with the tip so much as to slow forward growth. I generally mess with the top 1/3, and lower, but be careful, or youll snap it.

Heres 1 of the secondary branches from 1 of my plants.

This branch weighed in at 53 grams dry, . This is just 1 branch off of a 5 foot long plant.

Plant produced 25oz. That's my guitar case, so you can see how long the bud is.

Again. Use a strain that is known to have strong branching system. I have other recommendations, but that Dominion Skunk is a really great place t start.

Dankstankfromdownstairs said:

Oh no they are trained. Topped multiple times.


And about the bulbs. That was my thought to as they have three flowers on them. I actually just ordered new ones.


I take clones off each plant before throwing into flower. So i always have 6 plants flowering all year at all times. So the 6 plants always have 2 months to veg.

I can't up the plant count because it will not be legal here in Michigan. So I'm stuck with doing 6 plant a grow.

Click to expand...

Think about getting your med card if you want more plants it’s worth it...

Pal, it looks like too much nitrogen to me. Look at all the clawed leafs you have in your images, and how the yellow starts out on the serrated part of the leafs. Also notice how very, very dark green many of them are.

That's textbook nitrogen toxicity.