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i am using cree ca3070 leds to grow and i would say unless your willing to buy a decent led panel like the area 51 panels or diy your own cob setup i would suggest sticking with a hps over a cheap led panel. The reason led lights still get such bad press is that the Chinese led lights such as...

i bought 1 of these for my extractor fan and works fine to slow it down http://www.ebay.co.uk/itm/HYDROPONICS-GROW-LIGHT-13A-PLUG-IN-COOLING-FAN-SPEED-CONTROLLER-/201378412833?pt=LH_DefaultDomain_3&hash=item2ee316b921 but if your willing to spend that $65 on a fan controller it would be better...

This is correct but depending on the area your covering you might be better with more like this http://m.aliexpress.com/item/32351091574.html

As far as I'm aware you can't really fim or top plants that are already in flower as they don't tend to grow top shoots in the same way they do in veg but if it's just starting to show sex it's not too late to fim or top the plants and if your culling males then it would be worthwhile fim img...

I myself did use the a blurple light when I first started growing which did the job but hardly what your call reliable with the 3w leds so I am now using cxa 3070 leds there's no comparison in the growth in the plants and more importantly the buds. If you are wanting 10 of these Chinese panels...

Thanks for the reply I did look into that over the root excelurator but having issues finding anywhere that sells it in the UK.

I have just been given a gt205 nft and have just got the gh 3 part nutrients but wondering what would be the best root booster to use In this? I see people using root excelurator and voodoo juice and having great results. would that be better option than using pythoff? it seems it is either 1...

no unfortunatly the cxbs are not that cheap he had said cxa3070 ab for $26.50. i already have 1 cxa3070 ab from aliexpress a few months ago and ad bin is higher than ab with cxb is it not? :S

i just contacted the guy over the leds and he gave me these prices Vero29 V2: $25.5usd CXA3070 AB: $26.5usd CXB3070 AD: $36.5usd Shipping cost is $45usd by DHL to the uk if led quantity less than 30pcs. now a little unsure if its worth the extra $10 each for the extra 5% efficiency increase for...

I notice light is shining through your white painted bottle tops you are using as reflectors, have you tried putting a layer of black or reflective paint before the white? thought maybe that might increase effectiveness of the reflectors.

try this 1 http://www.aliexpress.com/item/Freeshipping-1pcs-Cree-XLamp-CXA3070-led-74-117W-COB-EasyWhite-5000K-Warm-White-3000K-LED-Chip/2052849889.html If not search for Cree XLamp CXA3070 on aliexpress and it will be the top 1.

I'm running 3x 3070s from aliexpress 1x ab bin and 2x z4 bin 3000k leds and they work great. They have the highest bin 5000k and z4 bin 3000k leds in stock as of yesterday...

I have just got some 730nm leds was just thinking is an alternative for people with only costing like $7 for the 15w version.

Been looking at exo Terra uv lamps for suplimental light and stumbled upon the night heat lamps range from them and it says it's 1500k and appears to go from 700nm and up. Would this be good to have on at night or provide a cheap source of 730nm for flower initiation at lights out...

I have a 4" extractor fan with carbon filter 2x 140mm pc fans for Intake and 4x 120mm fans for air circulation.

Thanks for reply on that 1 I will be running them in series so shall not have to worry about the vf. Also what is the recommended watt/sq. Ft with the vero/cxas? I am upgrading to a cupboard to go stealthier for main grow which is around 35" tall 20" deep 30" wide. I currently have 20x 660nm...

It's actualy a Xbox power brick I have in the pc but will just chuck it and go with 4 of them on the 650ma driver that I have. I didn't realise that having the light too strong caused them not too root as I had 6 clones in a diy bubbler under a 50w 6000k cree led and they just wouldn't root, I...

the pc case that i have has a 12v power supply already in it would it work well to just run 4 of these xpl leds in series with that 12v power supply that would mean 3v & 1.3amps per led with that so would mean around 15w from that or would it be better using the driver and less wattage?

what makes you say the xpl leds? just the efficiency? i do have a couple of these drivers spare so may be better just getting like 4 of these leds https://www.fasttech.com/products/1110810

Thanks for that, hasn't even thought about running vero 10s as I didn't realise they needed such a small amount of light so looks like I'll just be buying 3 vero 10s as I think spreading the light of a bit will be better than just concentrated by 1 led in the middle.