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Old 08-09-2005, 07:26 PM   #1
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Yet another CYANO Question

Alright, first thing first i have a 50 gallon reef tank up for around six months. I have all the equipment listed below in my sig. My water parameters are ammonia = 0, PH = 8.1, Nitrite = 0, Nitrate = 10, Calcium = 400, Salinity = 1.023. I have never had a problem with Cyano, or any alage for that matter. I Use RO water, and do 10% Water changes weekly. The only reason why i can see it starting is i went home for 5 days last week, when i go home to my parents house i unplug my skimmer so it doesnt run dry should too much water evaporate. My question is, by unplugging the skimmer, could this have started the Cyano. I noticed it the day i got back, it wasnt that bad, few patches on the sand here and there. I did another PWC, cut back lighting by two hours, and reduced feeding to once every two to three days. I will go get phosphates checked this weekend, but dont expect that to be the problem. Could it be because i had my skimmer unplugged?

TIA

- Jeff
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50 Gallon Oceanic: 2 maxijet 1200's, 2 150 watt visitherm heaters, BakPak II Skimmer with PS & BT, Coralife Lunar 2X65 watt Power Compacts

Filtration: 50lbs LR.com, 60lbs sand

Swimmers: 2 O. Clowns, Yellow Watchman, Firefish, Yellow Tang, Dottyback.

Clean-Up: Several snail & hermits, Skunk Cleaner, 2 Peps.

Corals: 2 zoo colonies, yellow polyps, star polyps
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Old 08-09-2005, 07:35 PM   #2
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If you got cyno I would say you have po4. Even if its not enough to be detected you have it. By ro do you mean ro/di or just ro?
RO water could have PO4 and nitrates in it, the DI cartridge is the part that removes it.
Test the water and get back to us, I don't think that shutting off the skimmer for a few days is the problem. Also it could take several weeks for it to fad away by cutting back the lighting and then it could come back.
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Old 08-09-2005, 07:39 PM   #3
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i use RO/DI water, the bottled water from Walmart with the purple cap. When i get my PO4 checked, i will get back to you.

Thanks,

Jeff
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50 Gallon Oceanic: 2 maxijet 1200's, 2 150 watt visitherm heaters, BakPak II Skimmer with PS & BT, Coralife Lunar 2X65 watt Power Compacts

Filtration: 50lbs LR.com, 60lbs sand

Swimmers: 2 O. Clowns, Yellow Watchman, Firefish, Yellow Tang, Dottyback.

Clean-Up: Several snail & hermits, Skunk Cleaner, 2 Peps.

Corals: 2 zoo colonies, yellow polyps, star polyps
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Old 08-09-2005, 08:29 PM   #4
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ANother factor is the age of the tank. It is now old enough where levels of nitrate are significant enough to be adding to the problem.
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