I have a 75 gallon planted tank. It has a footprint of 48" x 18". The beamswork da fspec 48" is 3.5" from the top of the water. The water is 18.5" deep. I have a Seneye meter which gives me PAR, PUR%, and a graph of the light reading covering 400-700nm. This unit was reviewed by some reef people and I feel good about the quality.
So here is my question. I am getting PAR reading with the tank full of water and planted along the lines of:
Directly under the light a few inches underwater:
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At the front glass at the gravel line:
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So my question is this. Do I assume the PAR readings are what shows on the meter or should I be taking that PAR number and multiplying it by the PUR percentage to get the true PAR reading that the plants can use?
The reason I am wondering is when I look at the 400-700 graph I see a lot falling in the middle...
Would you call this LOW, MEDIUM, or (obviously not) HIGH LIGHT
I keep coming back to a post about Amano tanks having 50 PAR at the front edge gravel line and I just wonder.
Thanks,
Dave
So here is my question. I am getting PAR reading with the tank full of water and planted along the lines of:
Directly under the light a few inches underwater:
------------------------------------------
At the front glass at the gravel line:
------------------------------------------------
So my question is this. Do I assume the PAR readings are what shows on the meter or should I be taking that PAR number and multiplying it by the PUR percentage to get the true PAR reading that the plants can use?
The reason I am wondering is when I look at the 400-700 graph I see a lot falling in the middle...
Would you call this LOW, MEDIUM, or (obviously not) HIGH LIGHT
I keep coming back to a post about Amano tanks having 50 PAR at the front edge gravel line and I just wonder.
Thanks,
Dave