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Old 01-18-2014, 02:47 PM   #1
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Zoanthids not opening

So it's been a week since I got my zoanthids and not all of them opened up. When should I be worried about them. Half are open and half are closed
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Old 01-18-2014, 06:28 PM   #2
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If they were happy they'd most likely been open by now. Did you acclimate them? If so, how? Tell us a bit about your tank (lights, water params, flow, size, etc) and also about the placement of the zoas in question (i.e. what type of flow, light, etc).
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Old 01-18-2014, 07:37 PM   #3
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I used the drip acclimating method. My lighting is a t5 4 bulbs, 72 watts. When I first acclimated I put the zoanthids at the bottom and slowly put it to the top. I'll take a picture when I get home
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Old 01-18-2014, 07:39 PM   #4
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How about your water params? Size of tank? That light might be fine, or it might be way underpowered depending on the size of the tank. Anything else in the tank, and if so how is it looking?
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Old 01-18-2014, 07:39 PM   #5
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Oh and I have a 20 gallon tank with 1.026 salinity. My parameters are all 0. I also have two koralias 425
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Old 01-18-2014, 07:40 PM   #6
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How old is the tank?

Calcium? Alkalinity? Magnesium? pH? temperature?
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Old 01-18-2014, 07:40 PM   #7
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So far I have about 20 heads but half of them are either open or partially open. The rest are closed
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Old 01-18-2014, 07:42 PM   #8
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I don't know magnesium levels because I'm using reef crystals . My temperature is 80. Tank is a year old
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Old 01-18-2014, 07:47 PM   #9
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Do you have other coral in the tank besides the zoas? How long, and how are they doing? Have you changed your light bulbs, if they are a year old? T5HO's should be changed every 6-12 months. The light you describe, if the bulbs are good, should be sufficient for zoas.

Would you characterize where the new zoas are in the tank as low flow, medium flow, or high flow? How about the same for lighting?

Understanding your calcium, alkalinity, and to a lesser extent mag levels are important to knowing if it is a water quality issue.
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Old 01-18-2014, 07:55 PM   #10
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The bulbs are probably a month old . I have a candy cane coral at he is doing pretty good in the tank. The zoas are put in the middle of the tank, considering the tank is a 20 high so the light is medium. The flow is medium flow too
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