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Discussion Starter · #1 ·
Question about the green Algae I have to clean off the glass of my 65g everyday:
Could it be from a bad/old bulb?

I have a 10k in my 6 bulb 36" that is in question.
I only get it when the lights are on and my old 28g (in the same room), has the same bloom where IT gets the light from the big tank.

Thanks
 

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older bulbs often shift to a spectrum that will allow algae to photosynthesis / grower at faster rates but algae still requires PO4 and NO3 to use as food to grow.
 
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