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Just noticed the ppfd is low, is that due to the 4x4 space? I grow in a 1 metre tray in the tent and with negative pressure the space becomes around that. The ppf is that over a metre2 I take it?? So in a 1x1m space it's 800 odd ppfd am I correct? Should I just leave them on full draw or would...

Wow thank you very much :D Iv dimmed with the internal pots to 120w per bar of 3, draw from the wall 362w. On pin fin heatsinks 6 72v on hlg 120 700a and 3 36v on a 120 1400a. Dimming them just this bit has shed a load of the heat. So at this power what would be a good starting point for...

No one able to help me with this, iv added reflectors and dimmed the lights to 120w per 3 bar so will be 360w draw from the wall, lights around 18-20 inches above the canopy

iv been searching but can't find my answer, What is the ppfd of 9 cxb 3590 at 50w in a 4x4 space and do reflectors change this at the same distance? Also to dim my drivers do I need to use the internal pots, can I not attach a dimmer to the mains side and use that to dim them all? Thanks guys

Yea I have 2 bars of 3 so far so would make sense. Just wanted to tidy things up abit really Thanks

im looking for some inspiration to make a permanent frame for my 9 cxb3590 90 crib cobs. At the moment it will be 3 seperate bars of 3 all independent so I can use 1 or all 3. Can't decide weather to keep it like it is or make 1 fixture with 1 plug instead of 3 seperate leads. Also keep...

On a side note has anyone payed duty on a quantum board to the uk just wondering what's it gonna cost me if I order one? Cheers

I need a way to ad more light in total aswell as ppf as I don't think when I remove the hps that the 300w is going to cut it. In a 1.2 tent but grow in a 1m tray. Iv zero experience with leds so I could well be wrong Thanks

Thanks guys but I'm thinking now weather I should, i only do 4 maybe 6 plants and this in the middle would it reach outward? Or would I be better off just making it a 9 cob setup

im looking at adding a quantum board or 2 to my setup. Will be 6 cxb 3590 3000k 90cri at 50w each. Should I go for the 4/5k board or stick with the 3000k theme? Will be running autos so I don't have a dedicated veg light. Also should I go for the 135w kit or 90w? Thanks

Hi thanks for that mark, that not to bad but what would it cost to ship to this side of the world then custums lol. Nice site though

Ok no worries thanks for the help

@Randomblame you come across quite abrupt like I should know to do this automatically? I take it your not a moderator on here? If you are please let me know so I can take my questions else where. All I'm asking is what are the alternatives, that's it Thanks to others for some help.

Signature? No signiture on the mobile site by the look of things. And I'm new to the site, sorry

Should I just go with 3500 80cri db bin? I want 3 bars of 3 in the end so ideally matching would be better Thanks

@welight where are you based do you have a website?

Thanks il have a look at that later

I have to think about shipping to the uk aswell and would rather order everything from the same place if possible Thanks

i just built my first ever light with 3 cxb3590 3000k 90cri on a 120 1400 driver. Now I was going to do another as want to replace my hps but kingbrite have sold out. Is there any alternative that can use the same 133x70 pin fins I wanted to keep them the same really but they don't know...