Led design help

Rahz

Well-Known Member
I’m just waiting on a batch of seeds I fertilised to be ready to pick and I need to pick a new nute line to use with this system.

Veg+bloom by hydro research is supposed to be shipping to Europe in a month or so I’m hoping that’s a decent price as this has a 130 gallon tank don’t want to be spending thousands on liquid nutes
Seems decent. I use maxibloom powder. Have you done hydro before?
 

SamWE19

Well-Known Member
Seems decent. I use maxibloom powder. Have you done hydro before?
Yeah done hydro before. Only problems I ever have is ph swing issues.

Got what I think is decent tap water now though. 150-180ppm out the tap (ec x500)

I’ve heard some good things about veg+bloom just their customer service seems all over the place recommending different things for different people. I’m not sure what line to use with dwc and my tap water. They messaged me back the other day saying my tap water is what will limit my growth - that didn’t make sense to me since their nutes are supposed to be complete
 

Rahz

Well-Known Member
Yeah I’d have to order mine from the USA for 130 usd then pay 50 usd shipping then probably 80 usd for import charges if I wanted to then return it I’d have to spend another 80 usd on shipping and only get 130 usd refund. Only one website I found selling a par meter here and their website has been crashing with php errors for months I emailed them asking about it and got no reply
I would keep it. If nothing else it should be good for checking relative light levels at your canopy, and also for determining the best reflector angle if you end up installing them. If you could work with someone who has a par meter and a 1212... get them to take a reading from a single cob at a set distance and current and report the PPFD. You do the same with lux meter. Now you can find a pretty exact divider for translating your lux readings into PPFD.
 

SamWE19

Well-Known Member
I would keep it. If nothing else it should be good for checking relative light levels at your canopy, and also for determining the best reflector angle if you end up installing them. If you could work with someone who has a par meter and a 1212... get them to take a reading from a single cob at a set distance and current and report the PPFD. You do the same with lux meter. Now you can find a pretty exact divider for translating your lux readings into PPFD.
I’ll run a grow and see how things are then probably just go for it and order a hydrofarm quantum par meter from USA on eBay. Will just be way more depressing if I spend decent amount of cash on the meter and it tells me that the readings are a lot lower than I expected
 

InTheValley

Well-Known Member
There's another powder even cheaper a lot of people like called megacrop.
Stuff is awesome, I use it as a suppliment with my PH perfect every watering, also i use recharge with them both. Everywatering. Megacrop seemed to be missing something, but using them together, seems perfect, also use calmag,lol..
 

InTheValley

Well-Known Member
I’ll run a grow and see how things are then probably just go for it and order a hydrofarm quantum par meter from USA on eBay. Will just be way more depressing if I spend decent amount of cash on the meter and it tells me that the readings are a lot lower than I expected
Man, telling ya, Get the Dr. Lux meter, drill a 3/8 hole in the cap, and scotch tape over the hole. I can give you the brand i use ( scotch tape)

I just went over my entire grow area, and my lux meter is dead on with the Hydrofarm PAR meter. From my research, the Hydrofarm is off from the appogie $500 model by 10%. My lux meter is actually calibrated to the exact 10% addition.
 

SamWE19

Well-Known Member
What are your yield expectations?
From this setup I’d be happy with just 1 oz a sq foot. I have 160cm wye pipe stacked up for the hydro system with a sprinkler system running nutes over the roots. It works out for every 1ft2 I have 1 plant
 

SamWE19

Well-Known Member
Man, telling ya, Get the Dr. Lux meter, drill a 3/8 hole in the cap, and scotch tape over the hole. I can give you the brand i use ( scotch tape)

I just went over my entire grow area, and my lux meter is dead on with the Hydrofarm PAR meter. From my research, the Hydrofarm is off from the appogie $500 model by 10%. My lux meter is actually calibrated to the exact 10% addition.
Wait your saying you can convert a lux meter to a par meter?
 

Rahz

Well-Known Member
From this setup I’d be happy with just 1 oz a sq foot. I have 160cm wye pipe stacked up for the hydro system with a sprinkler system running nutes over the roots. It works out for every 1ft2 I have 1 plant
I've gotten up to 3.5 grams per par watt. If your output is 4800 watts that should be at least 2400 par watts. You might not hit 3.5 but I think you will blow past 1 oz per foot without modifications.
 

InTheValley

Well-Known Member
alot of people here thought I was BSn about it, but I have proof now, its exact. I can move it to the floor, directly under the cob, anywhere i put it, its dead on accurate to the PAR meter.

These hydrofarm meters just convert Lux. I use 2pc 3500K and 2pc 4000k cobs, so i use the conversion factor of 65 divided by the lux, and its right on the money.

So, if you take the lux meter, drill the hole. Then you take the Lux meter and get your lux, and depending on your spectrum, calibrate it with the scotch tape, till you hit the conversion value. Done.
 

SamWE19

Well-Known Member
I've gotten up to 3.5 grams per par watt. If your output is 4800 watts that should be at least 2400 par watts. You might not hit 3.5 without the reflectors but I think you will blow past 1 oz per foot without modifications.
3.5g per par watt would be 3.75 oz per sq foot.
I think after you push over a certain threashold of par watts the yield you may get increases less and less.
These will be single cola only grows so getting over an oz I think may be lucky but we will see
 
Top