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  1. jeffkrol
    01-29-2016 02:21 PM - permalink
    Measure the distance from about the tube to top of the substrate.
    Type of t5 and reflector quality ect. makes a lot of difference.
    If you find a matching type just multiply PAR found at depth by a ratio
    2 tube equiv. and you have 5 at say 50PAR
    5/2 x 50 = 125
    What is high light is another question w/ multiple answers.

  2. Little Soprano
    01-29-2016 09:07 AM - permalink
    Little Soprano
    Out of curiosity, do you have any PAR data on T5s in 24" of water? In my thread on the plant forum, I've been getting told I'm at super duper high light with 5 T5s on a 120. I was under the impression, especially since they are mounted to the top of an 8" canopy, that I was closer to the higher range of medium light. I know you are an LED guy, but do you have any good threads or information on them?
  3. heel4you
    11-07-2015 04:25 AM - permalink
    There is someone on TPT selling a 36 inch BML 1 x 10000K Planted - XB Series Length: 36", Beam Angle: 90 Degree, Fixture Color: Silver)
    1 x SoLunar Controller for $249.00
    Which is the light I am looking for with the controller.
    They stated:
    I had an ADA Iwagumi tank running from January 18, 2015 to July 24, 2015.
    Looks like they have only 1 post on TPT.
    This is the only thing that makes me nervous.
    Seems like a good buy.
    Should I buy new and just forget about this one :/
    What do you think??
    Thank you ,
  4. jeffkrol
    10-27-2015 11:45 PM - permalink
    you have to watch the voltage.. The diodes are 3.3V and most of those boards are in series so voltage adds..
    My suggestion of 10 up boards but multiple pucks is what I was looking at.
    Of course it is possible to "cut" a trace and shorten each series strand but That is dependent on the layout and how to create more +/- "points"..

    Twenty in series requires at least a 66V DC power supply.. and if driven by many off the shelf constant current drivers needs 2-3 v overhead.
    69V DC power supply....

    yuji sells little 12" boards that run 24V .
    they put 7 in series plus voltage dropping resistor..(minimal voltage drop at 24V) and 3 parallel circuits per board.
    VTC Series High CRI MCPCB LED Module - Unit: 5 pcs ? High CRI LED Webstore

    The 24V are configured with 3 strings of 7 LEDs per string. The input mA per LED is 150 mA.
  5. ichy
    10-27-2015 10:34 PM - permalink
    I'm thinking about ordering those PCB's for 5730 LEDs.

    They come in all varying amounts for the # of LEDs'

    What do you think is a good number of LEDs/puck? The more the better????

    I like the 85mm size of the PCB's but I can get aluminum rod all the way up to 12" dia. So the PCB size won't really matter.

    The data sheet gives 45-49 Lumens/LED so that's some indicator of brightness I guess. Rough estimate 20Leds X 45 Lumens= 900 lumens per puck.
  6. jeffkrol
    10-26-2015 08:05 PM - permalink
  7. ichy
    10-26-2015 07:37 PM - permalink
    I looked at cooper as well. But its hard to source large diameter cooper in the 3" range for heatsink if you go with the those 85mm PCB's.
    The largest diameter cooper rod I can get here is 1.25"

    ASTM B187 110 Copper Round Bar | Buy Online | Cut to Size | No Minimum Order
  8. ichy
    10-25-2015 10:30 PM - permalink
    Even though you have a Packers emblem on your private
    Would you be interested in collaborating on a Yuji SMD light this winter?

    I have a lot of nice production stuff at work, Stratsys BIG 3d printer, CNC laser cutter, manual and CNC mills(not good at coding them!)

    I was just poking around a bit....Evil Bay has a 85mm PCB board that will work with the YUJI packages I looked at. Then make a solid aluminum 1" thick aluminum puck out of 3.5" dia. rod stock and mount it?

    Then find a good PWM driver and wire it up.

    Feel free to say no if you are not interested.


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02:16 AM - dazed&confused mentioned jeffkrol in post DIY CO2 Setup - Matheson, Where Does The CO2 Go
jeffkrol - Well, it seems rat...
10:17 PM - dazed&confused mentioned jeffkrol in post DIY CO2 Setup - Matheson, Where Does The CO2 Go
jeffkrol - Okay, I will see a...
10:48 AM - vincel892 mentioned jeffkrol in post Odyssea 36" EVO LED 3W Fixture PAR data
jeffkrol If i were to stick w...
06:44 PM - vincel892 mentioned jeffkrol in post Odyssea 36" EVO LED 3W Fixture PAR data
...a bay it is $899... jeffkrol Are those the custom...
07:17 AM - vincel892 mentioned jeffkrol in post Odyssea 36" EVO LED 3W Fixture PAR data
[quote=jeffkrol;8768146]You mean end...
01:47 PM - bsantucci mentioned jeffkrol in post Aquatic Life Halo
...pecs. We need some jeffkrol input here!
08:04 PM - bsantucci mentioned jeffkrol in post Which t5 fixture with good reflectors?
...hough on the tank. jeffkrol, since you are the r...
06:45 PM - ppp mentioned jeffkrol in post Help with 46 Bowfront LED lighting!
...a day. Agree with jeffkrol, you will need a sec...
02:45 PM - SL Dan mentioned jeffkrol in post Limnophlia Aromatica tops melting
... at 100%. I think jeffkrol had posted a graph d...
11:01 PM - Oana mentioned jeffkrol in post Finnex 24/7 full review.
...hings there too. jeffkrol - cruel, but that's ...
02:15 AM - sohankpatel mentioned jeffkrol in post Would 3 Kessil A150 (or 160) be too much light on a low tech 125g (72x18x22) tank?
...ed for saltwater as jeffkrol stated, the brands t...
10:15 PM - cube860 mentioned jeffkrol in post Is this light junk?/Help
jeffkrol I checked out that d...
08:41 PM - cube860 mentioned jeffkrol in post Is this light junk?/Help
jeffkrol sweet, that looks li...
06:34 PM - cube860 mentioned jeffkrol in post Is this light junk?/Help
...reshwater Bright jeffkrol the length of the mr...
09:54 PM - Tihsho mentioned jeffkrol in post Controlable LED Options
jeffkrol, I can see I've made...


05:28 PM - jeffkrol quoted creekbottom in post Can't find the leak!
I must have a leak somewhere but...
06:26 PM - bsantucci quoted jeffkrol in post lighting for a 72''x30''x30'
Opp's I did forget about thos...
05:58 PM - jeffkrol quoted bsantucci in post lighting for a 72''x30''x30'
I switched to aquatic life Hal...
07:15 AM - jeffkrol quoted thodoris111 in post fluvla aquasky vs finnex ray 2 vs planted + 24/7
which is the best light fixture ...
05:59 AM - jeffkrol quoted mistergreen in post CO2 sensor
Notice, this sensor is by VOLUME...
05:25 AM - jeffkrol quoted Squadz in post Is it worth upgrading my lighting?
. Any opinions? Everyo...
03:15 AM - jeffkrol quoted Mikevwall in post DIY lED lighting build/Questions
So do I have this right: ...
05:26 PM - jeffkrol quoted zavikan in post High Suspended light options??
Co2 injected, looking for 50...
02:21 PM - jeffkrol quoted David P. in post lighting for a 72''x30''x30'
Hi, yeah i have considered m...
08:41 PM - jeffkrol quoted in post Aqua illumination vega led
What kelvin are u guys using OK here is the "...
08:32 PM - Mighty_Pike quoted jeffkrol in post LED Build, 526 Watts (Vero LEDs and Colored LEDs) *Updated 2015-05-25*
SPECTRA Thank you [emoji4] ...
07:01 PM - jeffkrol quoted in post Aqua illumination vega led this false Yes
05:06 PM - jeffkrol quoted Cheetah2 in post Are 2x Satellite+Pro on 40B okay?
The size of the 40B almost re...
04:25 PM - jestep quoted jeffkrol in post Regulator Nipple ID
CONCOA CGA Connection Referen...
03:33 PM - Joshism quoted jeffkrol in post Building CO2 regulator
HOKE - 1666G4YA - Series: 160...
01:02 PM - jeffkrol quoted Joshism in post Building CO2 regulator
I have the Hoke 1666G2YA. O...
04:50 AM - Joshism quoted jeffkrol in post Building CO2 regulator
Gyroloc to whatever.. And yes...
04:03 AM - jeffkrol quoted pdeuchler in post CO2 sensor
Right, but wouldn't measuring ...
02:59 AM - jeffkrol quoted Airob in post Deciding Lighting. 150 gallon.
Given my current, 2 fixtur...
02:38 AM - jeffkrol quoted mooncon in post Suggestion about led-lights
I was looking at the dsuny t...

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