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changing lights.Lighting, Filtration & Other Equipment Specific discussions on aquarium equipment from protein skimmers to water pumps. Which are the best, what they do, and what you might need for your reef aquarium. |
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#1
June 6th, 2008, 07:27 PM
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changing lights.
I have a 75 gallon tank with a 45 inch 2 X 150 sunpod metal hallides. I have about 6 or 7 sps corals and various other corals. I have noticed that all most all my sps coral are bleaching from the bottom up. My parameters are perfect. Nitrate and nitrite are almost at 0. Phosphates are at 0, PH is at about 8.2. Calcium is at about 480 to 500. Alkalinity is perfect about 10-11and specific gravity is perfect. I have a sunpod which is only about 300 watts total. Has 14k bulb so blue lights not necessary (at least that is what they say). I talked to a local pet store and he said he had the same problem and had to upgrade to the 2 X 250 (500 watt total, 14k) in his 75 gallon sps coral. I am thinking about doing the same. My pet store is going to take back my 2 X 150 and let me upgrade to the 2 x 250's . Has anyone else had the sunpod. Have they had this problem. Some one told me I should keep sps's with only sps's is this true? Please let me know.
Michael Current Aquarium(s) Description: 75 Gallon Saltwater Reef, Sunpod 2X150 Metal Halides. Experience in Saltwater & Reef Aquarium Hobby: 3 happy years. LOVE IT. Other Intrests: Aquariums, Fishing, watching sports on tv 
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#2
June 6th, 2008, 07:51 PM
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Re: changing lights.
it depends on the SPS your keeping some require more light and some require less light but it sounds like you've got some that require more light. 2x250w is not a bad way to go. I love the 2x250w over my 72 bowfront. how tall is your tank from top to bottom and how far from the surface of the water are your sps pieces?
__________________
If bacon were healthy... I'd own a pig farm 
Current Aquarium(s) Description: 72 bow front Experience in Saltwater & Reef Aquarium Hobby: 1 year Other Intrests: Fish, Cars, Computers, Camping
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#3
June 6th, 2008, 07:54 PM
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Re: changing lights.
also before changin over to 250w you may also want to think about trying 10,000k or 20,000k bulbs which give off more PAR than 14,000k bulbs. it may and may not solve your issue.
__________________
If bacon were healthy... I'd own a pig farm
Current Aquarium(s) Description: 72 bow front Experience in Saltwater & Reef Aquarium Hobby: 1 year Other Intrests: Fish, Cars, Computers, Camping
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#4
June 7th, 2008, 02:01 AM
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Re: changing lights.
Sound like not enough light, that's about 4 wpg, which is usually not enough for SPS.
Lots of hard core SPS keepers keep only SPS, but you don't have to. Soft corals release toxins in to the water which can stunt the growth of SPS, but if you don't have a lot of softies, I don't think there's much of a difference. Just don't put the SPS downflow of the softies.
__________________
"If we went to a Halloween party dressed as Batman and Robin, I'd go as Robin. That's how much you mean to me... " Sarah 
Current Aquarium(s) Description: 240-gallon reef with a 55-gallon sump and 35-gallon refugium Experience in Saltwater & Reef Aquarium Hobby: 7 years
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#5
June 7th, 2008, 02:21 AM
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Re: changing lights.
How is your water movement. Sometimes when you are not getting enoungh flow into the center of the coral they will start to die from the inside.
Current Aquarium(s) Description: 120gallon mostly sps 2 250 watt halide and 220 watts of vho actinics. 30 gallon sump/fuge with mrc-1 Experience in Saltwater & Reef Aquarium Hobby: 5 years Other Intrests: son, dogs and reef keeping
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