Grandmaster Level - HLG Quantum Boards vs 1000w HPS side by side (youtube)

[Johnnycannaseed1]

To be honest and NOT HATING ON LED or HLG (those are fine pieces of equipment) - anyone that can set their feeling aside would look at thise test and completely discredit the end results on one factor alone - CAL-MAG
You can not give a significant nutrient input to one set of plants and not the other and even remotely call it a "VS"
He should have gave exact nutrient programs to both rooms.
Obviously bumping the Nitrogen, Calcium, Magnesium, (and whatever else is in his brand of Cal-Mag) will influence plant growth.
How do we know that the HPS yield wouldn't have gone up 30% with the addition of Cal-Mag??

We know because the HPS side wasn't CAL-MAG deficient, the levels were optimum, or else he would have mentioned it.

Since the HPS side "wasn't" CAL-MAG deficient, but the LED side is, what's the man supposed to do?

Would it be a fair trial to keep the LED plants in a state of deficiency?

Surely it's more scientific, and makes more sense to feed both the HPS and LED sides at their respective optimum levels?

Personally, I have ran LED vs HPS trials and I always found the LED side was a bigger eater with regards to water and nutes, which shocked me at first, then I began to realize the plants are working harder (increased metabolic rate) under the LED side.

The Fact is when you are doing an HPS vs LED grow, you have already changed one environmental factor with regards to the spectrum, and consequently, that has a knock on effect, which you have to factor in and allow for.

Both sides cannot be fed at the same rate and same levels because you will find they have different requirements. Feeding each side at the Optimum level is the only "fair" thing you can do

 

[InTheValley]

GML has been live on the show for freakin 3 hours i think now, been watching this show all day, almost 7 hours now, LOL..

GML is on right now.,

 

[InTheValley]

2 egos collide, all is good, GrowBoss giving him mad respect,

 

[since1991]

We know because the HPS side wasn't CAL-MAG deficient, the levels were optimum, or else he would have mentioned it.

Since the HPS side "wasn't" CAL-MAG deficient, but the LED side is, what's the man supposed to do?

Would it be a fair trial to keep the LED plants in a state of deficiency?

Surely it's more scientific, and makes more sense to feed both the HPS and LED sides at their respective optimum levels?

Personally, I have ran LED vs HPS trials and I always found the LED side was a bigger eater with regards to water and nutes, which shocked me at first, then I began to realize the plants are working harder (increased metabolic rate) under the LED side.

The Fact is when you are doing an HPS vs LED grow, you have already changed one environmental factor with regards to the spectrum, and consequently, that has a knock on effect, which you have to factor in and allow for.

Both sides cannot be fed at the same rate and same levels because you will find they have different requirements. Feeding each side at the Optimum level is the only "fair" thing you can do

This^^^ And spot on broham

 

[Dave455]

1 gallon fab pot contest would be cool, lol. as many as 4 seeds per pot.

no mixing ..the girls don't play well together !!

 

[Dave455]

good shit, I won fusion board, from photonfantom

only way to get is to win....never in stock

 

[InTheValley]

only way to get is to win....never in stock

yeah, thats what im seeing.

I wanted to get 4 of them, but seen people waiting forever for them, so went cobs.
Fusions are in stock tho now. figures, lol.

 

[Kushash]

It can get heated. But damn man. What would make a cat so worked up over a gawl darn dope growing thread on a forum...or post? Just silly. Just frikin silly. Everyone wants to be so RIGHT and agreed with on the interwebby. Not just dope growing either. It's rather ridiculous.

Do you mean calling Dawg my bitch?
That's just trash talk. Come on Man!
If you read the thread I have been rated PG much more than most over there.
I'm sure Dawg doesn't mind or maybe he does because I haven't gone away.
Something I said to the Dawg bothers One Hit I think.
Must have triggered a nerve lol.
Maybe it is because I walked in and am one of the few on RIU who can get away with turning the Dawg into my pet lol.
Carry on with the old conversation this is boring. We can talk plenty over in the comp I'm in since1991. Glad to chat with you over there anytime. As a 1st time player and finishing in the top 10 I'd be happy to talk about anything over there, after all a few of us over in my comp have not been afraid to share anything about our grow because a few of us have no fear .

 

[OneHitDone]

We know because the HPS side wasn't CAL-MAG deficient, the levels were optimum, or else he would have mentioned it.

Since the HPS side "wasn't" CAL-MAG deficient, but the LED side is, what's the man supposed to do?

Would it be a fair trial to keep the LED plants in a state of deficiency?

Surely it's more scientific, and makes more sense to feed both the HPS and LED sides at their respective optimum levels?

Personally, I have ran LED vs HPS trials and I always found the LED side was a bigger eater with regards to water and nutes, which shocked me at first, then I began to realize the plants are working harder (increased metabolic rate) under the LED side.

The Fact is when you are doing an HPS vs LED grow, you have already changed one environmental factor with regards to the spectrum, and consequently, that has a knock on effect, which you have to factor in and allow for.

Both sides cannot be fed at the same rate and same levels because you will find they have different requirements. Feeding each side at the Optimum level is the only "fair" thing you can do

I would agree that all should be fed Optimal, which further discredits all of the "Side by Sides.
Have yet to see one done with leaf tissue analysis. How do you know for sure your not short changing the led plants by stuffing them with cal-mag when maybe they only need mag?
How do you know the hps plants are not on the verge of a "cal-mag" deficiency just because it is not showing in the leaf just yet?

So answer me this, are the people religiously clinging to led tying to state that led drives photosynthesis or "increases metabolic rate" to a rate higher than the sun??
Last time I checked most nutrients that work under the sun will also grow plants under hid lighting without deficiency issues popping up all over the place.

 

[REALSTYLES]

I would agree that all should be fed Optimal, which further discredits all of the "Side by Sides.
Have yet to see one done with leaf tissue analysis. How do you know for sure your not short changing the led plants by stuffing them with cal-mag when maybe they only need mag?
How do you know the hps plants are not on the verge of a "cal-mag" deficiency just because it is not showing in the leaf just yet?

So answer me this, are the people religiously clinging to led tying to state that led drives photosynthesis or "increases metabolic rate" to a rate higher than the sun??
Last time I checked most nutrients that work under the sun will also grow plants under hid lighting without deficiency issues popping up all over the place.

LOL I'm organic I don't use calmag

 

[ANC]

I also don't use calmag, Just add vermicompost amendment to my coco when transplanting plants

 

[Unagi]

LOL I'm organic I don't use calmag

Mr roboto domo arigato

 

[Stephenj37826]

I would agree that all should be fed Optimal, which further discredits all of the "Side by Sides.
Have yet to see one done with leaf tissue analysis. How do you know for sure your not short changing the led plants by stuffing them with cal-mag when maybe they only need mag?
How do you know the hps plants are not on the verge of a "cal-mag" deficiency just because it is not showing in the leaf just yet?

So answer me this, are the people religiously clinging to led tying to state that led drives photosynthesis or "increases metabolic rate" to a rate higher than the sun??
Last time I checked most nutrients that work under the sun will also grow plants under hid lighting without deficiency issues popping up all over the place.

No led has no infrared heat like the sun and hid. So some nutrients are not mobile meaning they are only taken up when the plant drinks. Other nutrients are mobile. So because led has a high rate of photosynthesis yet not transpiring as hard they need a higher concentration of non mobile nutrients. Overall they will not necessarily use more nutrients it is more like they will lose less water. Also with the humidity as high as it was in that crop it would further slow down transperation.

Also the argument about needing more dehumidification can also be made about HVAC on the hid side. So it's a trade off. You need less HVAC capacity but more dehumidification capacity. If his room was built arrive led to start he would have used a smaller AC unit in turn that would run longer cycles and keep humidity down. Ask any HVAC guy you can have too much AC for a space and it will not run long enough to dehumidify the area properly

 

[ANC]

My dehumidifier uses 300ish watts, aircon uses kilowatts.

 

[OneHitDone]

No led has no infrared heat like the sun and hid. So some nutrients are not mobile meaning they are only taken up when the plant drinks. Other nutrients are mobile. So because led has a high rate of photosynthesis yet not transpiring as hard they need a higher concentration of non mobile nutrients. Overall they will not necessarily use more nutrients it is more like they will lose less water. Also with the humidity as high as it was in that crop it would further slow down transperation.

Also the argument about needing more dehumidification can also be made about HVAC on the hid side. So it's a trade off. You need less HVAC capacity but more dehumidification capacity. If his room was built arrive led to start he would have used a smaller AC unit in turn that would run longer cycles and keep humidity down. Ask any HVAC guy you can have too much AC for a space and it will not run long enough to dehumidify the area properly

Thank you for clarifying that for LED to really "Shine" a purpose built led room is recommended and also that the Light Spectrum emitted IS deficient in certain wavelengths that cause abnormal plant processes

 

[thisusernameisnottaken]

Gml should grow greenpointseeds.

 

[nevergoodenuf]

A room with both LED and HPS might be best in the low 80* with CO2 added. I add CO2 in winter so I can get the room into the 80* with the fans off and the scrubber on. Summer uses is usually just exhaust fans and no CO2.

 

[since1991]

Foliar spray your plants a soy protein hydrolysate and a fulvic acid in veg every 5 days. And put it in the tanks in later flower. Use a full profile nutrient fertilizer (EC strength depending on cultivar and environment particulars) high in calcium and magnesium nitrate . Kiss your supposed "calmag" problems goodbye. No matter what light your using. Your temps and especially humidity plays a huge roll in calcium uptake .

 

[OLD MOTHER SATIVA]

Foliar spray your plants a soy protein hydrolysate and a fulvic acid in veg every 5 days. And put it in the tanks in later flower. Use a full profile nutrient fertilizer (EC strength depending on cultivar and environment particulars) high in calcium and magnesium nitrate . Kiss your supposed "calmag" problems goodbye. No matter what light your using. Your temps and especially humidity plays a huge roll in calcium uptake .

the above sounds great..

however..USE Cal nit mag nit =no problems...

 

[since1991]

the above sounds great..

however..USE Cal nit mag nit =no problems...

Plenty in my base. Upwards of 5% calcium and 1.5% mag. Problems can arise with temps, humidity, super bright light , & high co2. Throwing more calcium and magnesium on top of a balanced feed in the form of a popular "calmag" supplement can exacerbate problems. What is ideal is getting stubborn cal and mag (And iron) shuttled into the plant with chelation. Particularly amino (glycine) and fulvic acid chelation. The minerals are there. They just need a little "push". Amino and fulvic acid does it. For me anyways. Using em...you just don't have to feed as hot either. Who likes feeding a hot ass fertilizer on a plant your going to smoke?