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Old 02-27-2011, 08:11 PM   #11
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How about some full tank shots?
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Old 02-27-2011, 08:11 PM   #12
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I agree I wanna see some pics of this beast

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Old 02-27-2011, 08:26 PM   #13
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Quote:
Originally Posted by Gregcoyote View Post
Before I changed over to LED, I had a heat problem and that seemed to cause a Green Bubble Algae attack. That seems under control now, but getting rid of these has been a challenge since my tank is over 32" deep.
I have devised something that I think can kill them using laser light one at a time. My theory is that if I can hit a bubble with a short pulse of blue laser light, I can cause the interior to boil, theoretically killing the spoors and destroying the bubble. As I am an engineer, I have access to such things and safety goggles. Testing will be on bubble specimens in a small test tank first. Will just corral the fish away from the action area for the real operation. Will post results.
algae spores aren't easy to kill. they live through quite a bit. this is why you can put dry rock that's been out on your back porch all winter, in a new tank and all of the sudden have hair or bubble algae. how will you cause the interior of the bubble to boil and not the water in front or behind the algae? i would definitely be targeting the nutrient issue that caused the algae, instead of the algae itself.
i do not think it was a heat issue.

i would love to see pics of the tank too. sounds really cool! did you get any PAR reading on the fixtures you are using yet?
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Old 02-27-2011, 11:53 PM   #14
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Haven't take any light readings yet, but my camera acts like it is shooting in medium outdoor indirect lighting. I have a small direct sunbeam that periodically hits the tank and it is about twice as bright.

I plan to do the laser tests in a small test tank with no fish or coral. I am unsure of the results as well. Probably just burn a hole in the bubble, but it might be absorbed by the whole bubble and heat it up way past the temps the spores can survive. I will start out with a short burst at 455nm at about 1/2 watt. That isnt much, but it is hundreds of times brighter than a regular laser pointer. If that doesn't work, I will go up to 1.8 watts in small steps. At this strength the laser will burn a hole thru a 2x4. Pinpointed on a bubble algae, it will at least be interesting. Tried a green laser, but of course that didnt work, at least at the power levels I have because the green algae reflects the green light back. If the blue laser doesn't work, I plan to try a red one. This is not recommended to anyone without proper safety equipment and knowledge as even the lowest powered lasers will blind you fast. This is simply an experiment to see if organisms like this can be killed from a distance thru seawater. And yes, it might be cool.
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Old 02-27-2011, 11:59 PM   #15
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By the way, I think you were right, but it was more of a lack of water changes. The algae scrubber is so efficient, I went for a long time on just supplements, also my halide bulbs were getting old. Lots of different circumstances added up to it. But now it has the ability to really hang in there. Emerald crabs, sail fin tang, nothing gets rid of them but plucking them and that is an impossible job. If my laser works, I will take great joy in blasting them one by one. Otherwise, I will wait for the tang to get bigger.
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Old 02-28-2011, 10:35 AM   #16
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i wish you could do a video of your experiment.
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Old 02-28-2011, 06:43 PM   #17
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I will. I am concentrating on eliminating my brief bubble algae issues.
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