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I may throw in a couple of hps bulbs over winter as it's cheaper than using heaters, the last combined hps and led grow I did was great, not enough cash in the kitty to upgrade to cmh yet. humidity is the key here, I follow a lot of growers who grow fantastic looking plants at 25 degrees which...

Nice looking strain there. Is it Jelly Breath?

Hot spot diffuser. Still current and work great on Hid lighting

Handy you posting this comment as have the same issue on one side of my current grow. The plants under the 600w look great, the other half under the 1000w look a lot lighter in colour, unfortunately I can't get the lights any higher so may have to turn them down a bit, may settle for 700w

UK too. Is it Really 9? Thought it was a post code lottery, some counties bust you for carrying an eighth. I always thought it was 4 plants. anyway, yes you could veg them much longer and scrog them and get more but longer time between harvests.

Hey SSHZ. I think Nutty meant your Leaf Surface Temperature. I was commenting on a thread he posted the other day about ambient temps when using LED and Leaf Surface Temperatures. I was also under the impression that temps had to be around the 30 mark under LED as the IR is a lot less compared...

also something to be said that under intense led lighting plants require a higher ec or ppm??????

A few chaps have touched on it already. You have virtually NO IR coming off those leds so your ambient air temps have to be nearer 30 degrees so you leaf surface temperature is what it should. LST will be about 5 or so degrees higher than your air temps under HID lighting. Get your temps up and...

Currently have a 1.5m x 3m area with 2 LEDs (1 x 600w & 1 x 1030w). Winter is coming and the thought of using a 1500w heater is a bit frightening after previous bills. I'd rather get the heat from a light source. Thinking of adding 2 CMH bulbs in the middle, more specifically 2 x horizon...

:clap: Just dabbed and listened :hump:

My latest led has far red and uv. Been looking at extra UV add on bars for increased terpene production. Been using HPS for the last 20 years, led for the last year. My environments kept pretty good, just the fact I'm in a place where my external temps swing a lot so it takes me a lot of effort...

Sorry for all the Q&As - hand watering? automated feeding? RTW? Bothered about runoff?

Lush looking canopy. Shows me I can defo fit more in my space. I'm running the maxibright 1030w pro (its effing bright). Also need to defoliate more, done it a few times but still perfecting it. Done a a few 1.5gpw grows, trying to push this to the next level, need to up my numbers though

Managed to read some of the diary at the farm before guest access kicked me out. Yields from LED outweigh hps any day. New on RIU, got a few diaries on uk420, over here for a bit of variety. Nice setup. I'll be watching

I've certainly got no curling, girls look really good, I'll be dropping the RH a bit more soon, I'd prefer my temps to be around 31 but finding it sits at 33.8. Don't want to have to introduce aircon as it's another expense. Last time I ran high temps, one of my girls went a bit odd but air flow...

jumping past the previous pages, never had calmag issues under led. the only issues I've had have been caused by too low temps, doesn't matter what your vpd is, ambient temps NEED to be 30 degrees or near. everytime my plants have looked rough under led, my temps have been too low. currently...

posting here as can't find the answer on another site I'm subscribed too. I'm currently running 2 x leds, a lumatek 600w and a maxibright 1030w Pro in a 1.5 x 3m tent. lumatek 600 is at 100% and maxi is at 75%. Running co2, currently at 1100ppm. In week 2 of flower. my ambient temps are...