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    Cyano and a denitrifier or?

    Resolved It was the lights. After 2 days under new lights, the cyano is retreating. No new outbreaks and the existing ones are smaller. Thank you everyone for your attention and responses. I guess 2 years was a bit optimistic on even T5s. Once a year is a better timetable for me anyway...
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    Cyano and a denitrifier or?

    Well, a different LFS said 1 year on the lights, so maybe the initial 2 year statement was ummm, hype. Anyway, changed the lights today. Hope to see less cyano soon. I'll let you know T
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    Cyano and a denitrifier or?

    The lights are T5s, 14 months old - supposed to last 2 years according to the LFS and the manufacturer. Installed Dec of 06. I'd get new bulbs if someone said that would fix it. I as just going on the rated longevity. Here are tests out of my logs with a seatest (Instant Ocean) Phosphate...
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    Cyano and a denitrifier or?

    Oh I forgot, I make my own RODI water. I have a double 3 stage kent setup with 2 sediment and 1 carbon going to a RO. Both of those dump into a large DI unit with is monitored for TDS at in and out (typically 20 in and 0 out). I change the filters at least every 6 months. I change the RO once a...
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    Cyano and a denitrifier or?

    Well here are a few details to address some of the things I read in the responses (thank you to everyone for responding!) I do 12 gallon water changes once a week. I change with Instant Ocean that I mix in a 20 gallon tank in the same room as the 75 (right next to it). I let it age for a week...
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    Cyano and a denitrifier or?

    Ask me anything. I've got a weekly log dating back to may 26 of 2003 when I started this hobby in a 55 gallon. Where I am today is a 75 gallon with T5 lights that hasn't changed significantly in years, but has been changing a little bit every few weeks ever since I got started. I've had a...
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    Poof! there went another Rio 2500...

    I bought an AquaC Remora Pro skimmer with a Rio (something, maybe 1800?) and heard all sorts of bad things about the pump, so I replaced it with a Mag3 and now use the Rio as the pump on my refill system where it has worked flawlessly for several years.... for 15 minutes a week. Don't know how...
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    New to the site wanted to say Hi,

    Mmmm ok. After tonight's water change, it may not be cyano as much as a diatom, so I should probably ramble away in some dedicated thread rather than clogging the new member area. And thanks. Tony
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    New to the site wanted to say Hi,

    I remember seeing a copepod a long time ago, so I hope I don't stay one for long... What I'm trying to do is to get rid of what I believe is some cyano that I can't seem to eradicate, but don't really have time to elaborate just right now... I will be back when I have 5 minutes to explain in...
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