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06/30/2014, 12:31 PM
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#1 |
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Registered Member
Join Date: Jan 2005
Location: new york
Posts: 2,277
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anyone change light spectrum to curb problem algae?
Hi, I use 2~250w MH's on my 75. One side is Radium, the other side was an old Phoenix. 3 months ago, I changed the Phoenix to a 10k Ushio, after a week, the Ushio side started to get slimy, brown stringy algae mostly on sps growth tips
 . So I switched the Ushio to a new Phoenix and the algae complety went away. Now 3 months later its starting again, only on the Phoenix side, under the Radium, no problem algae! So now I'm gonna try a 20k in place of my Phoenix. Hopefully the bluer bulb will help as it did when the phoenix was new. Anyone else use bluer spectrum to help with algae issues? 0 ppm No3/ 0.01ppm PO4 BTW.
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06/30/2014, 12:59 PM
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#2 |
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Registered Member
 Join Date: Dec 2008
Location: Garden Grove, Ca
Posts: 17,023
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It certainly works shifting color to avoid algae growth which is why we need to replace our MH and T-5 bulbs frequently, as they age they shift towards the red/yellow spectrum which promotes algae growth. If you shift too far towards the blue you may start to lose some coral coloration however.
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06/30/2014, 01:02 PM
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#3 |
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Registered Member
Join Date: Jan 2005
Location: new york
Posts: 2,277
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10-4
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