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Old 04-30-2009, 10:07 AM   #1
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Corals with stretched necks = too much flow?

Hello all,

I notice in some corals where the flow is high, their necks are stretched and thus they don't have the normal appearances. When I direct the flow elsewhere the necks return to the normal length but they don't seem to grow as well. Please advise. Thanks DP
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Old 04-30-2009, 09:35 PM   #2
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Usually when they stretch up it`s because the lighting is not enough. What type lighting do you have?
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Old 04-30-2009, 09:40 PM   #3
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What kind of corals? Mushrooms will stretch out to get more light. Other corals, like my pagoda cup, will stretch out further and further the more flow I give it.
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Old 05-01-2009, 10:10 AM   #4
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Usually when they stretch up it`s because the lighting is not enough. What type lighting do you have?
I have these two (total of 6 bulbs- 4 white and 2 blue):

1. 36" Nova Extreme 4 x 39 Watt High Output HO T5 Lighting Fixture. Performance driven electronic ballast, german parabolic reflector, integrated fan cools both ballast and lamps. 2 x 39 Watt Daylight 10,000K and 2 x 39 Watt Actinic T5 Slimpaq HO Lamps for 156 total watts. Two independent circuits with 6 ft. grounded power cords for independent control. Separate control for moon lights. Dimensions: 36" x 7.25" x 2.5". Model 1121.

2. Two 39 Watt SlimPaq 10K , Individually contoured reflectors, Plastic mounting legs, Performance driven electronic ballast. No independent control over 10K and Actinic lamps.

They are placed directly over the glass panels. I would like to know if I should replace item 2 with item 1 giving me 8 bulbs total? I love the glistering bright look at the LFS but I am concerned about the heat generated in the enclosed hood. DP
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Old 05-01-2009, 02:33 PM   #5
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Your lighting seems OK. Maybe as Neilanh said it is the flow.
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Old 05-01-2009, 04:13 PM   #6
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Hey Dr, what size tank do you have again. measurements please. I really want to know the depth of your tank...
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Old 05-01-2009, 04:45 PM   #7
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Hey Dr, what size tank do you have again. measurements please. I really want to know the depth of your tank...
It is the standard 72" long. I do not know the exact width and height. On the second picture look to the bottome left and you can see the extremely long necks of the pulsing corals. DP
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