The Planted Tank Forum banner

1 - 20 of 27 Posts

·
Registered
Joined
·
2,325 Posts
Discussion Starter · #1 · (Edited)
So I got the Seneye PAR meter in today and was able to take a few measurements in my 60 gallon high tank. So my tank is 24" high so the top of substrate to light is exactly 23". Then minus 1" for the thickness if the PAR sensor is exactly 22" from sensor to light. Light was at max setting. So as promised I got more readings and this time I used a home made mount to mount the par sensor onto make sure it does not move. I was able to get 22", 20", 18", 16", 14" and 12" all at 0" offset. I have also uploaded the Seneye readings as attachments.

22"
PAR=42
LUX=1575
Kelvin=7098
PUR=58%

20"
PAR=43
LUX=1587
Kelvin=7078
PUR=58%

18"
PAR=48
LUX=1794
Kelvin=6980
PUR=58%

16"
PAR=53
LUX=1956
Kelvin=7308
PUR=59%

14"
PAR=57
LUX=2106
Kelvin=7459
PUR=59%

12"
PAR=60
LUX=2219
Kelvin=7223
PUR=59%
 

Attachments

·
Registered
Joined
·
12,541 Posts
so the colored graph is what the Seneye uses for PUR. Black line is the Finnex spectrum response..
Subtracting the "white portion" from the whole summed from the black curve is PUR.

A reef example for comparison..


PAR measurements are pretty spot on to a new Apogee..
Odd that a "pure green" LED channel is listed as 5328K...
 

·
Registered
Joined
·
2,325 Posts
Discussion Starter · #11 ·
thanks for the data,
so on the 12" height, will the 60 PAR be sufficient for a high tech tank plant growth?! and what's the spread of it at 12" any idea?
Yes 60 PAR is perfect for high tech. Many high tech tanks have 40-50 par and are able to grow carpet plants with that with no issues. At 12" the spread is pretty good. As long as it is centered you should have no issues growing anything.
 

·
Registered
Joined
·
90 Posts
So, question on this....

I have the 24" version of the 24/7, running standard program ... before I got pressurized CO2 (was using Excel), a lot of my plants grew like crazy until they hit about 9 or 10" away from the light (substrate is about 14 or 15")... then they all stopped and started showing stunted growth - tiny leaves, not much growth, other signs of deficiency.

After pressurized CO2 (not quite lime or yellow-green, but def green on the drop checker), boom - growth again. Nice big new green leaves.

Could it be that they hit a PAR level that just needed more CO2 and gave up? From these readings, it sounds like it's almost getting into the med-high to high levels closer to the top?
 
  • Like
Reactions: clownplanted

·
Registered
Joined
·
2,325 Posts
Discussion Starter · #13 ·
So, question on this....

I have the 24" version of the 24/7, running standard program ... before I got pressurized CO2 (was using Excel), a lot of my plants grew like crazy until they hit about 9 or 10" away from the light (substrate is about 14 or 15")... then they all stopped and started showing stunted growth - tiny leaves, not much growth, other signs of deficiency.

After pressurized CO2 (not quite lime or yellow-green, but def green on the drop checker), boom - growth again. Nice big new green leaves.

Could it be that they hit a PAR level that just needed more CO2 and gave up? From these readings, it sounds like it's almost getting into the med-high to high levels closer to the top?
I would say that is most likely the cause for sure. When they are getting that high light which is their fuel and are starved of any nutrient including co2 then it for sure will cause stunted growth and other issues.
 

·
Registered
Joined
·
26 Posts
Is this data with based on the 24/7 + or 24/7+ SE? Not sure what the differnece is based on the finnex website! Looking for new light for Fluval spec V for mod-high lighte with CO2 for carpets plants and based on the 60PAR at 12in this should be good I think....
 

·
Registered
Joined
·
2,325 Posts
Discussion Starter · #15 ·
Is this data with based on the 24/7 + or 24/7+ SE? Not sure what the differnece is based on the finnex website! Looking for new light for Fluval spec V for mod-high lighte with CO2 for carpets plants and based on the 60PAR at 12in this should be good I think....
This is based on the 24/7. From what I have read I believe as far as par goes they are nearly identical.
 

·
Registered
Joined
·
194 Posts
Yes 60 PAR is perfect for high tech. Many high tech tanks have 40-50 par and are able to grow carpet plants with that with no issues. At 12" the spread is pretty good. As long as it is centered you should have no issues growing anything.
Thanks for the input, I've pulled the trigger!! ordered a 24/7 SE from Amazon!
 

·
A.K.A. Fish Room Bum
Joined
·
715 Posts
So I got the Seneye PAR meter in today and was able to take a few measurements in my 60 gallon high tank. So my tank is 24" high so the top of substrate to light is exactly 23". Then minus 1" for the thickness if the PAR sensor is exactly 22" from sensor to light. Light was at max setting. So as promised I got more readings and this time I used a home made mount to mount the par sensor onto make sure it does not move. I was able to get 22", 20", 18", 16", 14" and 12" all at 0" offset. I have also uploaded the Seneye readings as attachments.



22"

PAR=42

LUX=1575

Kelvin=7098

PUR=58%



20"

PAR=43

LUX=1587

Kelvin=7078

PUR=58%



18"

PAR=48

LUX=1794

Kelvin=6980

PUR=58%



16"

PAR=53

LUX=1956

Kelvin=7308

PUR=59%



14"

PAR=57

LUX=2106

Kelvin=7459

PUR=59%



12"

PAR=60

LUX=2219

Kelvin=7223

PUR=59%


Hey CP,
Did you get model SEN000039 ? I'm looking at meter myself for my new tank and am looking at PAR meters? It's about $149 or so?


Sent from my iPad using Tapatalk
 

·
Registered
Joined
·
2,325 Posts
Discussion Starter · #19 ·
Hey CP,
Did you get model SEN000039 ? I'm looking at meter myself for my new tank and am looking at PAR meters? It's about $149 or so?


Sent from my iPad using Tapatalk


I believe that's the model but not 100% sure. Was the only Seneye monitor unit out at the time. Was $199 at the time I got it.


Sent from my iPhone using Tapatalk
 
1 - 20 of 27 Posts
Top