20K Lights

[mng777777]

yeah, with both pc's and MH's, you have plenty of light. Those pc's contribute but your powerhouse, is the MH. You should start seeing some good growth. The actinics are more for color and health than growth. What kind of bulb do you have in that MH? the 10k is gowing to be mostly white with good growth but kind of lousy color, the 20k will be great color but lousy growth. I think the 14k is a good happy medium. but that's just my opinion.

 

[Rcpilot]

I bought the MH bulb here:
eBay My World - hobbylighting

This is the 175W 14K MH bulb I bought:
175W 175 WATT 14K METAL HALIDE AQUARIUM LAMP REEF BULB - eBay (item 280345094844 end time Mar-08-10 19:21:43 PST)

It was $20 for the bulb and shipping to my apartment. Took about 8 days to get here. Their ad says it's comparable to Coralife and Reeflux ............ but who really knows?

Here's the PC bulbs from Catalina
Actinic - http://www.catalinaaquarium.com/product_info.php?cPath=71_45_122_132&products_id=1452

460nm - says 450nm on the website but the bulb is stamped 460 - http://www.catalinaaquarium.com/product_info.php?cPath=71_45_122_132&products_id=1013

 

[Melosu58]

Great explanation mng. Thanks.

 

[Chris_150G]

RC those bulbs are at the lowest price that I've ever seen. Its $10 for a bulb. Mine were $60. How long have you had yours? I'm curious to hear how they hold up. One of mine needs to be replaced right now. It actually has a little bulge on the outside glass.

 

[Rcpilot]

I've only been running these bulbs for about 2 or 3 weeks.

Corals look AMAZING so far.

 

[bobby]

XM 20k are great bulbs for both color and growth. They're not as blue as most 20K, but have much higher par than other 20K. Great bulbs IMO.