I just wanted to share my experience with you guys. It might be helpful for some. I have a young 115g SPS reef (3 months) that has the contents of my previous 60 reef. Around the 2 month mark I started seeing some cyano and it spread all over the sand eventually. It wasn't affecting any of the SPS however it was growing over zoa and acans. I had to turkey baste these corals daily to make sure they weren't smothered.
I want the reef to mature naturally so slime removers were out of the question for me. I believe they are counter productive to our reef tank, eliminating good bacteria as well. I run an ultra low nutrient reef, only growing a small haze on the glass every 4 day, but this wan't enough to stop cyano growth. I believe my cyano growth is a response to my bioload of 14 fish in a young reef. Their waste forces bacteria to grow. IME eventually nitryifing bacteria out competes cyano, and the cyano disappears??. but this can take a while.
I read several threads and articles about running your reef with no light for several days. Apparently your corals are fine with this but cyano dies off. Quite a few SPS tanks did this successfully so I decided to give it a shot since I was tired of turkey basting every day.
So, I killed the lights The next day I checked the alk and cal expecting a reduction in consumption since there was no light. To my surprise, my levels were exactly the same and I did notice more SPS growth?. in the dark! This continued throughout the 3 days of darkness. Actually, I noticed a growth spurt. My sps grew faster than normal. I had no idea that they grew at night.:thrash:
Today was the first day with lights back on. There was only a few tiny pieces of cyano left. I did a 15 gal water change sucking out what I could and I was very pleased with the results. The tank was almost completely rid of cyano and the the SPS looked healthy. I did notice a slight fading in color from that lack of light, but polyp extension was excellent and corals looked healthy. Time will tell if the cyano will grow back. I will update my experience in the next week or two.
Before the blackout (only t5 lighting)
IMG_7820 by rich.colombo, on Flickr
After blackout (halide on)
IMG_7885 by rich.colombo, on Flickr
I want the reef to mature naturally so slime removers were out of the question for me. I believe they are counter productive to our reef tank, eliminating good bacteria as well. I run an ultra low nutrient reef, only growing a small haze on the glass every 4 day, but this wan't enough to stop cyano growth. I believe my cyano growth is a response to my bioload of 14 fish in a young reef. Their waste forces bacteria to grow. IME eventually nitryifing bacteria out competes cyano, and the cyano disappears??. but this can take a while.
I read several threads and articles about running your reef with no light for several days. Apparently your corals are fine with this but cyano dies off. Quite a few SPS tanks did this successfully so I decided to give it a shot since I was tired of turkey basting every day.
So, I killed the lights The next day I checked the alk and cal expecting a reduction in consumption since there was no light. To my surprise, my levels were exactly the same and I did notice more SPS growth?. in the dark! This continued throughout the 3 days of darkness. Actually, I noticed a growth spurt. My sps grew faster than normal. I had no idea that they grew at night.:thrash:
Today was the first day with lights back on. There was only a few tiny pieces of cyano left. I did a 15 gal water change sucking out what I could and I was very pleased with the results. The tank was almost completely rid of cyano and the the SPS looked healthy. I did notice a slight fading in color from that lack of light, but polyp extension was excellent and corals looked healthy. Time will tell if the cyano will grow back. I will update my experience in the next week or two.
Before the blackout (only t5 lighting)
IMG_7820 by rich.colombo, on Flickr
After blackout (halide on)
IMG_7885 by rich.colombo, on Flickr
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