Image

PPF, PPFD, YPF, DLI - A guide from Invisible Sun led

King of the indoor jungle
User avatar
Captain Beefheart
GR420 Leg End
Posts: 7580
Joined: Sat Nov 04, 2017 3:05 pm
Location: on a wet rock in the north sea
Has thanked: 2664 times
Been thanked: 4461 times
Contact:
Status: Offline

Re: PPF, PPFD, YPF, DLI - A guide from Invisible Sun led

Post by Captain Beefheart »

Marcus wrote:
Wed Jul 14, 2021 7:41 pm
BUT HOW FAR FROM THE CANOPY DO I NEED IT??

I did all the maths and got the colour 7.

:idn:
i had a 275 touching the main cola for 3 days bach no ill affect what so ever....i`d say a safe distance is 4 inchs :oik!: + i stand on that its in my diary documented see :oik!:
These users thanked the author Captain Beefheart for the post (total 2):
Marcus (Thu Jul 15, 2021 7:40 am) • 2-Scoops (Thu Jul 15, 2021 2:07 pm)

Captain Beefheart
GR420 Leg End
Posts: 7580
Joined: Sat Nov 04, 2017 3:05 pm
Location: on a wet rock in the north sea
Has thanked: 2664 times
Been thanked: 4461 times
Contact:
Status: Offline

Re: PPF, PPFD, YPF, DLI - A guide from Invisible Sun led

Post by Captain Beefheart »

Invisible Sun wrote:
Wed Jul 14, 2021 10:55 pm
Captain Beefheart wrote:
Wed Jul 14, 2021 10:53 pm
yo bach now im getting used to the LED`S i think my next grow will be all your lights i think i`ll put my HID back under the bed,now im getting some understanding with waterings / feeds which is no where near the same as HID..... ive actually found my feet i think :idn: anyway i`ll be firing up 2 x 275`s and 2 x fbars full melt....... oh btw god bless the cheese makers i think it was ! :Stoned:

veg cab under a 75 watter full melt :oik!:

Image
Glad to hear you've found your feet with them pal.
keep an eye out bach im ready to growl ........ roar roar fukin roarrrrrr beefhearts found the sweet spot i think. :lol: my new diary will be called ( 45mm jiffy to 11 ltr pot of husk ) :lol: watch this space... i`ll be back :oik!:

User avatar
2-Scoops
GR420 Leg End
Posts: 5960
Joined: Mon Nov 26, 2018 2:10 pm
Location: Not far away but far enough
Has thanked: 3768 times
Been thanked: 3675 times
Status: Offline

Re: PPF, PPFD, YPF, DLI - A guide from Invisible Sun led

Post by 2-Scoops »

GMO wrote:
Wed Jul 14, 2021 6:54 pm
2-Scoops wrote:
Wed Jul 14, 2021 11:55 am
You might as well be talking Chinese with all that tech talk, maybe I'm getting old and lazy, but i can`t get my head around any of that these days. Your lights are very bright though. 8-)
This info allows you to compare lights far better than by eye is all mate

we are at the point that lights are like bottled nutrients ie you can by a brand you like and have been told works (at face value and review the results) or ya can compare the specific msds of each for compounds used and truely compare similar products :oik!:
It all goes over my head does this stuff mate so i don`t even bother trying to understand it, maybe I'm a bit lazy at times on that score, but it hurts my head just trying, the little bit i do understand about lighting gets me by ok. I take your point what its for and all that stuff though, tis just a brain freezer on my behalf. :thanks:
These users thanked the author 2-Scoops for the post (total 2):
GMO (Thu Jul 15, 2021 5:37 pm) • Invisible Sun (Fri Jul 16, 2021 1:25 am)
"You don't put fish fat oil in a Ferrari" Operation Crossbow


User avatar
Invisible Sun
Posts: 744
Joined: Fri Jul 20, 2018 12:19 am
Has thanked: 332 times
Been thanked: 967 times
Contact:
Status: Offline

Re: PPF, PPFD, YPF, DLI - A guide from Invisible Sun led

Post by Invisible Sun »

2-Scoops wrote:
Thu Jul 15, 2021 2:05 pm
GMO wrote:
Wed Jul 14, 2021 6:54 pm
2-Scoops wrote:
Wed Jul 14, 2021 11:55 am
You might as well be talking Chinese with all that tech talk, maybe I'm getting old and lazy, but i can`t get my head around any of that these days. Your lights are very bright though. 8-)
This info allows you to compare lights far better than by eye is all mate

we are at the point that lights are like bottled nutrients ie you can by a brand you like and have been told works (at face value and review the results) or ya can compare the specific msds of each for compounds used and truely compare similar products :oik!:
It all goes over my head does this stuff mate so i don`t even bother trying to understand it, maybe I'm a bit lazy at times on that score, but it hurts my head just trying, the little bit i do understand about lighting gets me by ok. I take your point what its for and all that stuff though, tis just a brain freezer on my behalf. :thanks:
I'll see if I can condense it for you
These users thanked the author Invisible Sun for the post:
2-Scoops (Fri Jul 16, 2021 9:45 am)
For further information on our products please visit our website www.invisiblesunled.co.uk

User avatar
IMO
Known User
Posts: 2895
Joined: Mon Apr 27, 2020 8:01 am
Location: Northwest Uk
Has thanked: 2246 times
Been thanked: 2825 times
Status: Offline

Re: PPF, PPFD, YPF, DLI - A guide from Invisible Sun led

Post by IMO »

Captain Beefheart wrote:
Wed Jul 14, 2021 10:53 pm
yo bach now im getting used to the LED`S i think my next grow will be all your lights i think i`ll put my HID back under the bed,now im getting some understanding with waterings / feeds which is no where near the same as HID..... ive actually found my feet i think :idn: anyway i`ll be firing up 2 x 275`s and 2 x fbars full melt....... oh btw god bless the cheese makers i think it was ! :Stoned:

veg cab under a 75 watter full melt :oik!:

Image
Liking the fire extinguisher ball Captn, care to share what you have found different about watering, feeding under Led, more feed I’d suspect?
These users thanked the author IMO for the post:
Captain Beefheart (Sat Jul 17, 2021 8:13 am)

User avatar
IMO
Known User
Posts: 2895
Joined: Mon Apr 27, 2020 8:01 am
Location: Northwest Uk
Has thanked: 2246 times
Been thanked: 2825 times
Status: Offline

Re: PPF, PPFD, YPF, DLI - A guide from Invisible Sun led

Post by IMO »

@Invisible Sun
So I did the calculations based on your figures but with an auto flower light schedule ie 20hrs which comes out at 68.4 😱 is this bad and if so what’s the solution 🤷🏻
These users thanked the author IMO for the post:
Guest (Sat Jul 17, 2021 9:04 am)

User avatar
Invisible Sun
Posts: 744
Joined: Fri Jul 20, 2018 12:19 am
Has thanked: 332 times
Been thanked: 967 times
Contact:
Status: Offline

Re: PPF, PPFD, YPF, DLI - A guide from Invisible Sun led

Post by Invisible Sun »

IMO wrote:
Fri Jul 16, 2021 8:07 am
@Invisible Sun
So I did the calculations based on your figures but with an auto flower light schedule ie 20hrs which comes out at 68.4 😱 is this bad and if so what’s the solution 🤷🏻
If you're in full flower I'd try an knock it back to a DLI of 40_50

Ps just seen your Dm.

User avatar
IMO
Known User
Posts: 2895
Joined: Mon Apr 27, 2020 8:01 am
Location: Northwest Uk
Has thanked: 2246 times
Been thanked: 2825 times
Status: Offline

Re: PPF, PPFD, YPF, DLI - A guide from Invisible Sun led

Post by IMO »

Invisible Sun wrote:
Fri Jul 16, 2021 8:44 am
IMO wrote:
Fri Jul 16, 2021 8:07 am
@Invisible Sun
So I did the calculations based on your figures but with an auto flower light schedule ie 20hrs which comes out at 68.4 😱 is this bad and if so what’s the solution 🤷🏻
If you're in full flower I'd try an knock it back to a DLI of 40_50

Ps just seen your Dm.
So you do that by turning lights down or shortening duration of lights on?

User avatar
Invisible Sun
Posts: 744
Joined: Fri Jul 20, 2018 12:19 am
Has thanked: 332 times
Been thanked: 967 times
Contact:
Status: Offline

Re: PPF, PPFD, YPF, DLI - A guide from Invisible Sun led

Post by Invisible Sun »

You can do either. Raise the light. Dim it down or shorten hours. Or combination of all 3
These users thanked the author Invisible Sun for the post:
IMO (Fri Jul 16, 2021 10:11 am)

User avatar
ncrypta.core
Known User
Posts: 1252
Joined: Wed Mar 24, 2021 10:42 pm
Has thanked: 217 times
Been thanked: 1704 times
Contact:
Status: Offline

Re: PPF, PPFD, YPF, DLI - A guide from Invisible Sun led

Post by ncrypta.core »

IMO wrote:
Fri Jul 16, 2021 9:27 am
So you do that by turning lights down or shortening duration of lights on?
As your running autos, I'd turn the light dimmer down. The reason is by may maths your ppfd is around 950 and to achieve 40-50 dli you might need to drop down to 12/12, but thought if you run autos at 12/12 it would make you have a poorer harvest.

https://www.waveformlighting.com/hortic ... calculator
Where the salts go, the water will follow

Post Reply

Return to “Invisible Sun LED”