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Old 04-17-2005, 09:51 PM   #1
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Riddle...Whats brown on the sand, light during the day and..

Just wondering if its Diatoms or Cyano. Its on my sand and looks very light first thing in the morning and darkens the longer the lights are on.

thanx
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Old 04-17-2005, 10:47 PM   #2
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I have the same problem. So I'm tagging along.
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Old 04-17-2005, 11:19 PM   #3
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LOL same here,, my tank is about 18 days old. Doesn't seem to be a big problem but still wondering it is normal and will it go away?

Jeff
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Old 04-18-2005, 11:50 AM   #4
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Is the brown algae powdery when disturbed or does it come of in sheetlike layers? The powdery type will be diatoms and will clear up once the silicates that feed it are used up. The cyano feeds on excess nutrients(phosphates). You can do some things to help but until you stop the nutrient source(overfeeding, overpopulation) it will continue to be a problem. For now if it is cyano you can siphon it out and increase waterflow and that should keep it from taking hold.
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28gal bowfront
40lbs livesand(bag from LFS), 30lbs live rock(LR.com)
2 O. Clowns
1 peppermint shrimp, 5 red leg hermit crabs,
4 mexican turbo snails, 15 nassarius snails
ricordea mushroom, candy cane coral,
super color polyps, hairy mushrooms
bubble coral, hawiian feather duster
coralife lunar 2x65, HOT magnum canister
10 Gal refugium(chaeto) & seaclone skimmer
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Old 04-18-2005, 05:21 PM   #5
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I have both,, but mostly brown and powdery.doesn't look terrible right now. tank is starting to look decent but still have tons of things to go yet LOL. thanks

Jeff
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Old 04-18-2005, 06:55 PM   #6
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I dont have sheet like. Its just grainy. I guess I have to wait for the silicates to get used up. I use RO water but I'm not sure if its DI. I guess I'll have to get a test for silicates then.

Thanx RMPD
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Old 04-19-2005, 10:47 AM   #7
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for the diatoms you can use some turbo snails and hermits if you are impatient. I used them and they knocked of the diatoms in 3 days.
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28gal bowfront
40lbs livesand(bag from LFS), 30lbs live rock(LR.com)
2 O. Clowns
1 peppermint shrimp, 5 red leg hermit crabs,
4 mexican turbo snails, 15 nassarius snails
ricordea mushroom, candy cane coral,
super color polyps, hairy mushrooms
bubble coral, hawiian feather duster
coralife lunar 2x65, HOT magnum canister
10 Gal refugium(chaeto) & seaclone skimmer
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Old 04-19-2005, 06:41 PM   #8
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Hmmm....I have 20 turbos and they are never on the sand. always the glass and LR
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Old 04-19-2005, 07:34 PM   #9
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a diamond goby works really go at that
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60 gal s/w tank - 1 adult koran angel, 1 yellow tang, , 10 blue leg hermit crab, 15 snail, , 1 tri-bar damsel, 1 chocolate star fish, 20 blue legs hermit, 20 snails, 1 cleaner shrimp, 1 blue damsel, 1 citron goby, and 1 dragon goby
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