Brand of LED: Vipar
Price of the led : COB £150, V300 £100
Delivery cost: Free
What size was the grow space : .75x.75.1.5
Spectrum used: COB Blue(430~450nm,460~475nm), Red(620~630nm, 650~670nm),Green(520nm)

This is the layout of the chips on each of the four units in the COB.
V300 Blue(430~460nm,450~475nm) Red(620~630nm, 650~670nm) IR(730nm)Warm White(3000k~3500k) And Pure White(6000k~9000k)
Customer service rating..1-5: 5 Very helpful and a quick response.
Wattage of the LED ( actual power draw if poss): COB 400w(200w actual draw), V300(180w actual draw)
Optics used : COB 90 degree lenses over 128 x 3w Bridgelux leds focused by 4 90 degree reflectors. V300 90 lenses over 100 x 3w Bridgelux leds
Build quality: Solid.
Warranty length : 1 year, 30 day money back promise.
Any noticeable plant deficiencies : For maximum growth and yield the plant can only handle the V300 for the first 5 to 6 weeks, I augment the V300 with a 125w cfl to add heat to the tent. Once she has matured the COB will provide more than enough red for flowering but I will have to add a large red cfl to keep temps up.
Value for Money Rating..1-5: 5 for the price per unit but 4 since I needed more red for flowering, hence I had to buy another unit.
Additional info : I've had to review both these panels together as I cannot recommend either of them alone for a complete seed to harvest grow.
Downsides;
The COB unit is too strong for a young plant in my height tent, if it was a 2m tent I have a feeling it wouldn't stress it as much but I feel it is lacking enough blue spectrum for vegging anyway and with no white light either it's not the best.
The V300 just hasn't got the power or the reds to take a large plant all the way to a decent harvest.
The good stuff;
The COB unit puts out a very intense and focused beam so there really is only one place for it in a tent of 1.5m high and that is attached tight up close to the roof!
The beam of the light from there covers the whole tent up to a height of 1m, so proportionally if you have a mathematical head you'll be able to work out what it will cover in your own tent but if not PM me and I'll work it out
Keeping it up high means that only the hardiest of the colas will get up close and by that stage they love the intensity.
I've got no idea if the green light helps but I'm positive the reds do lol.
The V300 I have used four times now and it's most definitely my panel of choice for vegging. The girls love the whites and blues, the IR seems to do no harm at all and they all need a bit of red from the start!
These two panels are proving to be excellent as a team in my size tent and would probably work well together for up to 2 plants in up to a 1.5x1.5x2m tent.
Where one lacks a bandwidth the other comes into play. I've learnt my lesson as far as using the COB at first but I will be using both panels from about 6 weeks onwards.
Link to your AFN grow: COTC Cash Crop , Dark Devil (Current grow)
Link to where it was bought : Vipar COB
Pic of the LED panel ( optional ) :


COB and V300
Price of the led : COB £150, V300 £100
Delivery cost: Free
What size was the grow space : .75x.75.1.5
Spectrum used: COB Blue(430~450nm,460~475nm), Red(620~630nm, 650~670nm),Green(520nm)

This is the layout of the chips on each of the four units in the COB.
V300 Blue(430~460nm,450~475nm) Red(620~630nm, 650~670nm) IR(730nm)Warm White(3000k~3500k) And Pure White(6000k~9000k)
Customer service rating..1-5: 5 Very helpful and a quick response.
Wattage of the LED ( actual power draw if poss): COB 400w(200w actual draw), V300(180w actual draw)
Optics used : COB 90 degree lenses over 128 x 3w Bridgelux leds focused by 4 90 degree reflectors. V300 90 lenses over 100 x 3w Bridgelux leds
Build quality: Solid.
Warranty length : 1 year, 30 day money back promise.
Any noticeable plant deficiencies : For maximum growth and yield the plant can only handle the V300 for the first 5 to 6 weeks, I augment the V300 with a 125w cfl to add heat to the tent. Once she has matured the COB will provide more than enough red for flowering but I will have to add a large red cfl to keep temps up.
Value for Money Rating..1-5: 5 for the price per unit but 4 since I needed more red for flowering, hence I had to buy another unit.
Additional info : I've had to review both these panels together as I cannot recommend either of them alone for a complete seed to harvest grow.
Downsides;
The COB unit is too strong for a young plant in my height tent, if it was a 2m tent I have a feeling it wouldn't stress it as much but I feel it is lacking enough blue spectrum for vegging anyway and with no white light either it's not the best.
The V300 just hasn't got the power or the reds to take a large plant all the way to a decent harvest.
The good stuff;
The COB unit puts out a very intense and focused beam so there really is only one place for it in a tent of 1.5m high and that is attached tight up close to the roof!
The beam of the light from there covers the whole tent up to a height of 1m, so proportionally if you have a mathematical head you'll be able to work out what it will cover in your own tent but if not PM me and I'll work it out
Keeping it up high means that only the hardiest of the colas will get up close and by that stage they love the intensity.
I've got no idea if the green light helps but I'm positive the reds do lol.
The V300 I have used four times now and it's most definitely my panel of choice for vegging. The girls love the whites and blues, the IR seems to do no harm at all and they all need a bit of red from the start!
These two panels are proving to be excellent as a team in my size tent and would probably work well together for up to 2 plants in up to a 1.5x1.5x2m tent.
Where one lacks a bandwidth the other comes into play. I've learnt my lesson as far as using the COB at first but I will be using both panels from about 6 weeks onwards.
Link to your AFN grow: COTC Cash Crop , Dark Devil (Current grow)
Link to where it was bought : Vipar COB
Pic of the LED panel ( optional ) :


COB and V300
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