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LED light question for heavily planted 40 gallon breeder tank


New Member
Dec 6, 2023
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Gilbert, AZ 85297
Light experts, please advise: I have a 40 gallon breeder tank (36"x18", photos attached) that I recently started injecting with CO2 (only ~1.5 drops per second, not enough to turn the checker properly green, but I am OK with that). My question is about the following: Since I now have to dose more all-in-one fertilizer (d/t CO2), the water in the tank is darker (even after 50% water change, since I re-dose the ferts) and thus, the tank looks less lit than it looked in pre-CO2 time. And with LED turning the entire light output calculations into a rocket science, I wonder if I have enough light for my high light plants.

I currently have FOUR LED lights over this tank:

THREE AQUANEAT LED Aquarium Light Full Spectrum for 36-44" (said to have total 84 LEDs, 60 pcs 6500K white LED, 12 pcs blue LED, 6 pcs pink LED, 6 pcs Green LED) https://www.amazon.com/gp/product/B...iAf-0NNa9PTfOQtUVySpWDALUHJaVWLXm8OImTJI8GF8g

ONE NICREW SkyLED Aquarium Light 30-36" (said to have 6500K white LEDs and full spectrum RGB LEDs) https://www.amazon.com/gp/product/B..._3tfOx7_ZYYmz0RbBVQDS5qDwra5uMlhRdzNRkXXCXV3s

Is it enough light for high light plants? My aquarium is VERY densely planted (so I am assuming that more light would be needed since there is very little-to-none space between plants).
Thank you so much in advance!


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