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Old 09-03-2010, 06:29 PM   #1
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Lighting

Hey guys I am having problems with the green hair algae in my tank. It's everywhere and still growing. Someone told me to cut back on the lighting. I have a metal halaid light with the antic blue one too. My question is how long should the each light be on for? My tanks is in a room the get sunlight in it but not directly on the tank. I also have a few corals in there as well. I want to cut back on the light to kill the algae but I dont want my corals to die too.
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Old 09-03-2010, 07:23 PM   #2
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do you have fish in there?,also what powerheads,size of tank and test results.
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Old 09-03-2010, 09:26 PM   #3
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FantasyReef Databases-Viewing item "10 Step Plan for Nuisance Algae Control"

Check out this checklist of factors that can fuel nuisance algea.
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Old 09-04-2010, 09:51 AM   #4
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Nusiance algae needs 3 things to live: water, light and food (excessive nutrients). You can't eliminate the water, the corals need the light, so you must remove the excess nutrients.
What is your nitrate level?
Have you tested for phosphate?
Do you run carbon and if so what brand and how often do you change it?
How often do you do water changes and what kind of water (tap, well, RO/DI, etc) do you use?
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Old 09-04-2010, 11:11 AM   #5
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I have a few fish in there. I do have a carbon filter I change it about once a month. I use RO/DI water. I don't know my phosphate level cause my test kit didn't come with that test. and my Nitrate level is zero. I'm doing 10 gallon water changes once a month.
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Old 09-05-2010, 10:39 AM   #6
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What size tank is this and what do you use for filtration?
I'm not sure what you mean by "carbon filter", but you should be using 1/2 cup carbon/50g water and change that every month.
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Old 09-05-2010, 04:53 PM   #7
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how often do you feed the fish and how much?.cut lights down to around 5 hours/day,feed once every 2-3 days and keep doing min of 20% water changes/week.
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Old 09-05-2010, 05:12 PM   #8
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i wouldn't cut the lights down at all. it's not going to cure the problem, which is excess nutrients.
weekly water changes is your best defense. it's going to take time. it's not an overnight fix. i would manually remove whatever you can and start on a weekly water change regimen.
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Old 09-07-2010, 07:49 PM   #9
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Alright thanks. Water changes I can do. I have a 55 gallon tank. So how much should I be changing weekly? I only feed my fish once every 2 to 3 days for the most part. I have a Bio Wheel sump with the 3 trays in it so I get the filter pads and cut them to fit and change those every month.

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Old 09-07-2010, 08:55 PM   #10
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how long has your tank been setup? it does'nt sound like you have nutreint problems, but you should check your phosphate level. it sounds like you you don't have any snails and reef crabs in it, if you do how many of each? you said you had 2 corals in your tank. I guess the rest of the tank is bare reef (live rock)? the biggest problem with having enought light to grow coral and only having very little of the live rock covered by corals and not having enought algae eating critters to consume the algae, the algae will take over the tank. your lighting should be on for 10 to 16 hours in your case i would go on the low side until you add some more corals hope this helps if you have any questions pm me

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