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Discussion Starter · #1 ·
trying to decide what to replace the bulbs with on my 75g vho setup
yes i know old technology but what i have right now

and what color spectrum to get ,i need some opinions

which are the best bulbs?

uri, coralife, ect

and what color combination??

1 6500k
1 10k

2 10k

or 2 6500k

i need to get these today for fast responses would be welcomed hehe
 

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don't go on kelvin ratings for growing ability; just look at the spectral peaks. you need (big) blue and red spikes.

kelvin rating for fluorescent light is just an approximation of what a black body would look like, and they're usually way off.
 
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