Maxspect 420R

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Jan 14, 2014
Tobe wrote
I have two lights residing 3-inches over my 130-gallon freshwater tank, 24-inches deep, 17-inches wide by 5-ft long. Lights have been set to 90% in the daytime serving various Amazonian plants but recently experienced a massive outbreak of cyanobacteria (blue/green algae). I've finally beaten the algae back (by completely rebuilding the tank, dose of Marycel, followed by turning off light for 5-days) and have this question; how much is too much light? What is the best setting for both spectrums (percentage-wise) during peak hours of photosynthesis, for as i said, 24-inch deep tank.
The general question is being asked by others on line and if answered here, i will spread.
Best!
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8 Answers
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Jan 14, 2014
Chris Conti agent wrote
Tobe,

Which Razor models and color temperature do you have?

Chris
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Jan 14, 2014
Tobe wrote
It was a new model specifically for planted tanks (I had to await shipment last fall). All the manual shows is 420R.

Ah ha;
Light fixture says 160W, 8000k, ser num R4A8K-1211-0220
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Jan 14, 2014
Chris Conti agent wrote
There are 4 models and 3 color temperatures. I need to know exactly what you have to help.

Chris
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Jan 14, 2014
Tobe wrote
If the answer to that is not in the provided serial number I don't know where to look
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Jan 14, 2014
Chris Conti agent wrote
Do you still have the original box? There is a model and serial number on one of the ends of the Razor. Do you still have your purchase receipt?

Chris
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Jan 15, 2014
Tobe wrote
Serial number; R4A8K-1211-0220
(160W, 8000k)
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Jan 15, 2014
Chris Conti agent wrote
Tobe,

You're over lighting your aquarium, and if possible I would raise the light higher over the tank. Drop the intensity to a peak of 60% during the daytime to see what changes occur.

Chris
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Jan 15, 2014
Tobe wrote
Will do. Thanks