More light or cooler temps for highest yields ?

Hi, I have 4 x 600 w hps lights in my grow space, with them the temps are like 25-26 celcius (77 f-78.8 f) constant.
I also have 4 x 216 w T-5 lights which I can turn on, with 2 of them turned on the temps are like 27 - 28 celcius (80.6 f -82,4 f) and with all 4 turned on depends on outside temps around 28-29 celcius.
so is it better to offer them cooler temps constanly in flowering or the highest amount of light to get best yields...and if so would it be more beneficial later in flowering to hit them with the higher lights...?

More Light wins everytime

see ur plants as living creatures like cat dog goldfish than things

and stuff will improve greatly

Trash the T5 shit is old schools for ur plants is like a candle to the sun(600w)

tho many uses for the T5 when germing or vegging

compared to 2000w of HPS is a waste

Balance: is vital: 4x600w should have a rectangular footprint of about 20sqft

position is vital to see the chart in inches below

good luck

the t5 have there place .in flower . i use the 10000 k last 5 or so days excellent results. the t5 will flower the plants . i would not turn on the 4 bulbs if it raised the temps that much its not worth it

Hi, thanks for info guys, I will try and see effects...now I am having 2 x T-5's as extra in operation to give those extra lumens ,temps are 28.1 celcius that's like 82.58 F.
The strain is Moby Dick and they like pretty warm climate , feel free to comment to this , the main is the yield end of the day.

yield over quality? nah

Yep, the quality is anyway stellar with Mobys...I am just saying my preferences..

vostok said:

More Light wins everytime

see ur plants as living creatures like cat dog goldfish than things

and stuff will improve greatly

Trash the T5 shit is old schools for ur plants is like a candle to the sun(600w)

tho many uses for the T5 when germing or vegging

compared to 2000w of HPS is a waste

Balance: is vital: 4x600w should have a rectangular footprint of about 20sqft

position is vital to see the chart in inches below

good luck

Click to expand...

The chart is probably counted by HPS without cooled reflectors , my covered reflectors have SERIOUS wind inside the cover and won't even get warmer than a cat by the glass...so the too hot is not even possible !

do you know what a good grower will pull using a .4 600 watt hps ? 30 to 60 and adding 4 t5 is kinda a joke . keep it cool

How are you cooling all this stuff ?
In what medium are you growing ?

Phytium hater said:

The chart is probably counted by HPS without cooled reflectors , my covered reflectors have SERIOUS wind inside the cover and won't even get warmer than a cat by the glass...so the too hot is not even possible !

Click to expand...

Temps held to no higher then 75 will produce tighter or denser buds. This is expressed by higher weight yields in the end.
Light increase's are still king of yield increase.

kisiel said:

How are you cooling all this stuff ?
In what medium are you growing ?

Click to expand...

2 lights including 1000cfm filter /exhaust 800 cfm ,so 2 sets of these (two exhaust systems with the same type load)
the wind and cooling in closed hoods are incredible...

Dr. Who said:

Temps held to no higher then 75 will produce tighter or denser buds. This is expressed by higher weight yields in the end.
Light increase's are still king of yield.

Click to expand...

Hmmm, first sentence says to get better yields with cooler temps is better, second sentence says more light that cause a bit higher temps is the winner...just making sure which one you prefer Dr Who ,cheers mate...I mean in respect and I value your contribution..

Phytium hater said:

Hmmm, first sentence says better yields with cooler temps at the end, second says more light equal a bit higher temps is the winner...just making sure which one you prefer Dr Who ,cheers mate...I mean in respect and I value your contribution..

Click to expand...

Like this then?

Lighting intensity increases. Will increase yields the most.
Second point but easier to do with no money (still works with higher light intensities too).
Hold ambient temps around 71 F with lower RH values of around 40% and you will increase the density of buds. This will increase yields by weight if you have a "Loose" bud problem.

Better? I did edit the first post a little.

Ok , yep great thanks allot for clarifying...

Just looking at nature, indicas grew on mountains, with clouds and shade. Sativas are from equatorial or s equatorial with full blazing hot sun and often humidity. So indicas like cooler temps, and can still dense up with less light, sativas like a tropical environment.

cookie master said:

Just looking at nature, indicas grew on mountains, with clouds and shade. Sativas are from equatorial or s equatorial with full blazing hot sun and often humidity. So indicas like cooler temps, and can still dense up with less light, sativas like a tropical environment.

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YET! Sativa's will dense up very well at those cooler temps! They do tend to be fluffy, if'n your not!

More light but only if you can keep the temps in order so about 26c is good.

Ok, , because any extra light will make the temps higher than that...it's very difficult to be definite about that ,because if buds ain't swelling like monsters and makes me think that they could do better with the extra light systems which would provide also a different spectrum and serious extra lumens....the watts with all the lights would be 3246 watts and 426 400 lumens.
Without the extras the lumens would only be 360 000....and watts 2400 (so the 1 gram per watt is the question)
but if the the temps are against any extra yields then I am saving electricity