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Old 08-27-2010, 03:49 PM   #1
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Curing Live Rock: What is this stuff?

So this is my first SW tank and I've got about 50/50 LR and Base Rock curing in the tank right now. I left for a couple days and when I come back this is what I see (pictures attached)... Is the white fuzzy stuff normal? I've never noticed it in my freshwater so I thought I should check. It's been curing for about a week and a half now. PWC every few days.

Thanks for the help!
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Old 08-27-2010, 04:07 PM   #2
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I have absolutely no idea. But really curious to know who does.

EDIT: Couple minutes of research leads me to believe it is some sort of fungal mat. You should scrub it off and suck it out. Did the yellow stuff just appear too?
And is it growing on the LR, BR or both? It might just be nasty die off from something.
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Old 08-27-2010, 04:44 PM   #3
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Its only on the BR as far as I can see... I scrubbed it with a tooth brush and rinsed it pretty darn well I thought, but Maybe I should do it again. Think I should pull it out of the curing tank and put it in a separate bucket? Thanks!
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Old 08-27-2010, 04:45 PM   #4
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Oh and yellow stuff was on the rock. The LFS said if it comes back it is pretty sweet looking... maybe he's full of it and I should scrub it off?
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Old 08-28-2010, 03:48 PM   #5
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Anyone have any ideas?
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Old 08-29-2010, 11:57 AM   #6
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I'm not a salt water guy but you may get more responses in the ID forum instead of here since that is kinda what you are looking for...
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Old 08-29-2010, 02:17 PM   #7
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Not sure about the white fuzzy stuff, but id say the yellow is a form of coraline algae, and should be left on the rock. It also comes in red, purple, pink, and maybe some other colors.
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Old 08-29-2010, 04:52 PM   #8
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i would not do water changes until the cycle is over. you are taking out much needed ammonia, thus disrupting the cycle. i would also leave the lights off until the cycle is over. ambient light from the room is enough to keep anything alive, and low enough to not trigger algae blooms.
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Old 08-30-2010, 09:51 AM   #9
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X, I will have to try and find this article for you, but I'm pretty sure it was by Sanjay Joshi about how water changes during a cycle actually doesn't slow it down at all. If I'm remembering, he said the levels in our cycles get way higher then natural conditions and taking some of that out can actually be beneficial.
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Old 08-30-2010, 06:37 PM   #10
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Yeah its still there. Doesn't seem to be growing/spreading on to the LR, just staying on the baserock. I guess if I can't be sure it is beneficial I'll have to take them out and scrub them again?
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