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devilsgreed11

Experienced Reefer
Location
garfield, nj
Rating - 100%
16   0   0
hello i am about to start a 155 bow tank as a reef i am having trouble with the lighting . i am planning on getting 2 175 watt metal halide pendants with 20k bulbs on the sides with a 250 watt pendant 20k in the middle. as you all know the 20k bulb is very bluish in color. is it necessary for me to get actinic bulbs like a t5 retrofit kit ?? since corals need the blue light to feed on would the 20k bulb be good for them. just need to clear my head and would like to know from some reef experts thanks MR.
 

Arati

Advanced Reefer
Vendor
Location
LI
Rating - 100%
56   0   0
I ran 20k radiums for years , there is no need for additional lighting.

however it is nice to the view the tank with just a couple blue plus bulbs on it. I think the 1 hr dusk is my favorite time to view the tank.

so is it needed ..no , is it awesome... yea .

you could use LEDs too, now I run all t5's I plan to use LEDs for dawn/dusk
 

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