shawnybizzle
Well-Known Member
Aye they don't look bad tbf but remember that price of the black dog is in us dollars....if in were gonna buy one it would be a black dog proofs in the pudding
The UK Growers Thread!
- Thread starter lozac123
- Start date
Saerimmner
Well-Known Member
About £1k for those blackdogs on fleabay delivered from the states
smokehog
Well-Known Member
Hi, I have just got a new 8in fan and it sounds like a jet engine. I need help wiring the fan to this controller. I hope someone can help because I am no electrician. I understand that I can wire to LF which will just control the fan. But if I use the environmental I don't know how to wire this? Do I bridge it?
Any help is grateful because I am no electrician.
Last edited:
Saerimmner
Well-Known Member
An what was the question?
shawnybizzle
Well-Known Member
Its risky bizz diving into expensive tackle u don't know about defo need to do more research....Phillips have teamed up with some herb growing company and thier having a crack at led lights as well so u never know a few years time hid might be a thing of the past.....them ones ice put up don't look bad but they only use 195 actual watts from the wall so their questionable
Saerimmner
Well-Known Member
A lot of the research into LED`s in a horticultural application were done by Prof John allen of St andrews university, well worth a read about some of the stuff hes done over the years
shawnybizzle
Well-Known Member
I'll have to have a gander any links?.....it seems a lot more yanks are using LEDs as well now with good results...its just a shame they so damn expensive lol
Lemon king
Well-Known Member
5 more years for led me tinks.....need to wait for the boom to end.
Saerimmner
Well-Known Member
LEDs Help Plant Growth
Work by our Emeritus Professor John Allen on the use of light emitting diodes to promote plant growth has reached the pages of the trade magazine "Photonics Spectra".
Prof Allen has found that plants grown in daylight but with relatively small amounts of additional lighting from selected LEDs can develop much faster. For example, fuschias illiuminated with particular red LEDs can flower up to four weeks earlier than those grown under daylight alone. Ohter aspects of plant growth, for example overall shape or intensity of colour, can also be affected by the right LED spectrum. Prof Allen is a co-organiser of a workshop on the topic in the Netherlands in September.
Fuchsia plants grown in daylight but with additional lighting
from LEDs with different spectra.
Another way to modify the spectrum of light at a plant is to use a reflective surface, for example a bench covering, with an appropriate reflectivity spectrum. The British Horticultural Development Council has commissioned Prof Allen to devise a standardised protocol for the measurement of reflectivity spectra and to produce a catalogue of the spectra of surfaces relevant to horticulture.
Prof Allen has found that plants grown in daylight but with relatively small amounts of additional lighting from selected LEDs can develop much faster. For example, fuschias illiuminated with particular red LEDs can flower up to four weeks earlier than those grown under daylight alone. Ohter aspects of plant growth, for example overall shape or intensity of colour, can also be affected by the right LED spectrum. Prof Allen is a co-organiser of a workshop on the topic in the Netherlands in September.
Fuchsia plants grown in daylight but with additional lighting
from LEDs with different spectra.
Another way to modify the spectrum of light at a plant is to use a reflective surface, for example a bench covering, with an appropriate reflectivity spectrum. The British Horticultural Development Council has commissioned Prof Allen to devise a standardised protocol for the measurement of reflectivity spectra and to produce a catalogue of the spectra of surfaces relevant to horticulture.
Saerimmner
Well-Known Member
Early history of light emitting diodes
Emeritus Professor J W Allen of this School was involved in the early developments of light emitting diodes. This work is reported in a book just published on "Advances in Light Emitting Materials".
The first report of light emission when a current was passed through a semiconductor rectifying junction was by the British engineer and inventor H J Round in 1907. He used a contact between a metal wire and a silicon carbide crystal. Subsequently there were sporadic laboratory demonstrations of the effect in a variety of materials.
The first practical visible light-emitting diode was devised in John Allen's group at the Services Electronics Research Laboratory. A small production line was set up there in 1962. The material used was gallium phosphide containing controlled amounts of zinc and oxygen. They called these devices "crystal lamps"; the term "light emitting diode" came later. Gallium phosphide: zinc, oxygen devices dominated the LED market until the late 1970s.
The story has now been told in the opening chapter "Visible Light Emitting Diodes - The Formative Years" by J W Allen and H G Grimmeiss in a book recently published by Trans Tech Publications "Advances in Light Emitting Materials".
John Allen has been in the School for many years, and is now Emeritus Professor. One of his main research interests at present is the use of LEDs of specific wavelengths to influence aspects of the growth of plants.
First posted BDS 27.11.08
Emeritus Professor J W Allen of this School was involved in the early developments of light emitting diodes. This work is reported in a book just published on "Advances in Light Emitting Materials".
The first report of light emission when a current was passed through a semiconductor rectifying junction was by the British engineer and inventor H J Round in 1907. He used a contact between a metal wire and a silicon carbide crystal. Subsequently there were sporadic laboratory demonstrations of the effect in a variety of materials.
The story has now been told in the opening chapter "Visible Light Emitting Diodes - The Formative Years" by J W Allen and H G Grimmeiss in a book recently published by Trans Tech Publications "Advances in Light Emitting Materials".
John Allen has been in the School for many years, and is now Emeritus Professor. One of his main research interests at present is the use of LEDs of specific wavelengths to influence aspects of the growth of plants.
First posted BDS 27.11.08
looks like u do bridge it yeh, errrr, thats way big mate totally not needed like, i guess 1-2-3-4 are they for hum and temp probes??
my local does beasty controllers much like the ones on ebay BUT 1.5k mde for the job not light dimmers like ebay use.
im ordering my 8" this week.
http://www.ebay.co.uk/itm/120886856572
Lemon king
Well-Known Member
fucking ebay sluts......
anyone had any real bargins latley??
anyone had any real bargins latley??
R3l@X
Well-Known Member
I've a manrose mix-flo fan, very VERY good fan.
Garybhoy11
Well-Known Member
Ice that fan u linked there only shifts 720m3 my 6"fan does the exact same and was a fiver cheaper than that one u just showed. I'll find a link for u
snoyl
Active Member
Aye its a strange one,I only grow for myself and a couple of very close mates so Im not sure Ill be able to smoke loads and loads of it if it keeps that lemony flavour,it really does taste like lemon kitchen cleaner,definitely an aquired taste
Garybhoy11
Well-Known Member
Here ya go man, its a good bit quieter than the 8" one u looking at
http://www.ebay.co.uk/itm/Inline-Duct-STUBE150-6-100mm-Extractor-Hydroponics-Bathroom-Fan-700m3-h-/390686002408?pt=UK_Baby_Baby_Feeding_Bottle_Warmers_Coolers_LE&var=&hash=item5af6b34ce8
http://www.ebay.co.uk/itm/Inline-Duct-STUBE150-6-100mm-Extractor-Hydroponics-Bathroom-Fan-700m3-h-/390686002408?pt=UK_Baby_Baby_Feeding_Bottle_Warmers_Coolers_LE&var=&hash=item5af6b34ce8