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Old 02-13-2005, 11:44 PM   #1
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Brown Algae

Is brown algae bad? Ever since I got stronger lighting, they started forming on the tank.
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Old 02-13-2005, 11:54 PM   #2
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is it diatoms? what are your water perameters?
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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 02-14-2005, 12:08 AM   #3
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How long has the tank been set up? Likely diatoms, and a completely normal occurence for new tanks.
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Old 02-14-2005, 01:48 AM   #4
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tank has been set up for four months. ammonia is .25 ppm and nitrates are about or in between 0 and 5.0 ppm.
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Old 02-14-2005, 01:50 AM   #5
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what do diatoms do?
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Old 02-14-2005, 06:54 AM   #6
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Quote:
tank has been set up for four months. ammonia is .25 ppm and nitrates are about or in between 0 and 5.0 ppm.
That seems like a long time to still have ammonia readings, and isn't 0 to 5 a rather large range for nitrites (maybe I'm using a cheap test kit)? I'm on day 17 of my cycle and yesterday my ammonia dropped to very nearly 0 for the first time, but my nitrites are still high at about 5. They shoull both be at or near zero after the completion of a cycle, if I'm not mistaken. (I have cause to be concerned about my nitrites, as I discovered a blue mushroom hitchhiker on a piece of LR that I added on Saturday. I'm doing 2x daily 5 gal changes in a 30 gal tank to try to help it survive the tail end of my cycle.)
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30 gal standard 55 lbs LR, 60 lb live sand, 10 gal sump/refugium. Urchin skimmer, mag7 pump, 3 x 96W PC combination 10,000K/actinic bulb, 2 blue LED moonlights
SG 1.024, temp 79.5, pH 8.4

Livestock I added:

1 skunk cleaner. 12 hermits: red, scarlet, blue. 15 or so assorted snails. Discosomas, Ricordia, Rhodactis mushroom corals, chaetomorpha (sump), 1 feather duster, Montipora digitata, Montipora capricornis, Montipora hispids. assorted zoos, Xenia, Kenya tree coral, green Sinularia, green star polyps, branching hammer coral, bubble coral, Devil's hand leather. Yellow chromis, purple firefish.

Hitchhikers: the usual suspects :crabs, bristles, urchin, mantis shrimp (now in exile in mantis tank)

List of possible/likely newcomers:

Feather duster. PJ cardinal, Bangghai cardinal, Firefish goby, Clownfish, Neon goby, Yellow watchman goby, Orchid dottyback. Various corals.
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Old 02-14-2005, 12:03 PM   #7
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Brown algae is from silicates getting into the system. Usually from tap water or RO only water without a DI attachment.

As far as your ammonia is concerned, many types of test kits will register a false possitive. Since you have only a 0.25 reading, no nitrite and only 5 ppm nitrate, I would lean towards finding a better grade of test kit.

How long have you had the new lights, what type did you get and what where the old ones? How old is the tank?

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Old 02-14-2005, 07:19 PM   #8
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Switching the lights caused a bloom in my tank. I would say thats te problem. If you want to get rid of it I would suggest a refugium.
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