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Old 01-09-2011, 03:56 PM   #11
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The number one thing you have to worry about when it comes to temps is stability. Temps need to stay within a few degrees. I would still get a heater for the winter anyway and once it warms up you can cut it off. Good luck.
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Old 01-09-2011, 05:09 PM   #12
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what wattage is the metal halide over your tank? how low did you put the corals?
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Old 01-09-2011, 06:53 PM   #13
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Lightbulb Heater in tank now - wattage of bulbs - brown bubbles

Hi Doug...Metal Halides are new for me. I have the kind that you clip/bolt onto the back of the tank. It came with two bulbs, a 14,000 and a 10,000. I HAD the 14,000 on it, but switched to the 10,000 one this morning to see if it made a difference.

Initially when my son put the corals in the tank he just placed them all over the rocks (which are built in a tall formation with many caves. This morning he moved most of them quite a bit lower than they had been when I got so many replies about the lighting.

Any thoughts?

Also, I have this brown bubble stuff (not like the green algae bubbles I've seen) and haven't a clue what it is, but it is attached to a back rock that came from my smaller tank and now it's on my frogspawn that had only one thriving branch and now it won't open either, ugh! That one singular coral lasted through two total nano crashes and now I have a better tank/lighting and this happened. Should I start another topic? I don't know how to post photos or I would. Thanks!!!!

HEATER IS INSTALLED and water is at 75 degrees and rising...
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Old 01-09-2011, 10:35 PM   #14
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hi lauriemae.
if the 14k was shocking them, the 10k will make it worse. check the wattage of the unit. it will say it on the bulb too. meanwhile, put the 14k back in. if it's too much for the tank, which i am not 100% convinced of yet, you can get a 20k bulb for it. that will be weaker and be a lot more blue.

take some pictures of the tank if you can. especially the brown stuff. i'm thinking possibly cyanobacteria. is it slimy and can you rub it off easily?
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Old 01-09-2011, 11:34 PM   #15
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UHOH!

If a little bit of knowledge is dangerous, imagine THINKING you knew a ltitle only to find you know NOTHING! I will change out the 10,000 and put the 14,000 back in and shop for a 20,000.

It's weird...all my things did SO well in my nano...flourishing! AND...the first few days the xenia, frogspawn, mushrooms etc. were in the 30 gallon with MH, they did wonderful but yesterday after adding 7 small frags, everything started to decline. Now I will say this brown stuff was on a rock from the nano and now is growing in my 30 gallon. I will take some photos and figure out how to post them. They are different round shapes like the silver/aqua algae balls but that's about the extent of the comparison. One fell off a thermometer I pulled out of the tank and it doesn't feel too slimy, but feels like a balloon. I'm going to pop it after I show my son later tonight.

How do I post a picture? To me it looks like a bubble algae I saw on a website called Botryocladia skottsbergii - 'Red Valonia' but I am of course the one who knows nothing! It never killed anything in my nano....but it's doing weird stuff in my 30 g.

Tomorrow I will take and post some pictures. Thanks for the help. Looking forward to you all helping me figure it out!

LM

oh...and the little ball did NOT feel slimy.
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Old 01-10-2011, 12:36 AM   #16
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well, if it is just red bubble algae, i wouldn't worry too much about it.
for posting pictures i like to use an image hosting server, like photobucket or tinypic or something like that, then just paste the image location here.

i'm thinking your whole problem was just light shock.

i love the avatar by the way.
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Old 01-10-2011, 01:12 AM   #17
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Wink tomorrow

I will post some photos. I hope you're right that it is just light shock and really hope the coral will live through it.

Thanks for your help....check back in tomorrow.

LM

(thanks...avatar is just me!)
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Old 01-10-2011, 02:48 PM   #18
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Your 12 gallon probably had 2 18 watt PC bulbs, one white, one actinic. You jumped to 150 watts of pure coral feeding light. Yikes. It would be like one of those canadian tourists with the white legs, black socks and flip flops on the beach in july.

Corals adapt to low light by pufffing up larger. So they "look" like they are growing and all happy, when they are just bigger to maximize surface area. Them shrinking is a response to the huge light increase. I put all my new frags on the sand in my solana, then move them up in a few days. But these are th store bought ones
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Old 01-10-2011, 02:51 PM   #19
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And a heater for night time is a good idea. You keep your house AC chilled in the summer? Same thing. You will most likely need only a small one. I like 78
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Old 01-10-2011, 04:00 PM   #20
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You made me laugh with your analogy! I needed that, thanks.

I posted photos, info on the reef corals sick thread. I appreciate your assistance!

LM
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