This is a bulb Pl:
The T-5 is better because its light is more profound, later I will change the bulbs Pl for a few tubes T-5 that give better results.
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Originally Posted by Dmaaaaax
What kind of returns are you using for that much water filtration? I am guessing you use a spray bar setup near the surface?
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Yes, it's the same system that brought all Eheim filters.