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Old 09-16-2008, 12:57 PM   #1
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Talking Coral Growth Rate...

I just got a 1x1 inch piece of a "green star polyp" from a friend of mine. I've heard that these things grow pretty fast and will take over your tank. Does anyone know just how fast this thing should grow and spread? What are the determining factors besides lights and calcium?
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Old 09-16-2008, 02:23 PM   #2
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They can and will take over. The best way to control them is to keep them on an "island" rock one that does not touch anything else in the tank. That is unless you want them to take over things.

After they get established and are happy with your tank you will see noticeable growth on a weekly basis. Good flow is another factor to growth.
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Old 09-16-2008, 02:30 PM   #3
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Well, I do want it to grow and spread. I currently have it attached to a piece of live rock and it is not touching anything else. It is in a 75 gallon with good water flow. the lighting is 1-40watt actinic and 1-40watt 6,500k.........all of the chemical levels are normal. How much growth do you think I should expect under these conditions?
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Old 09-16-2008, 02:32 PM   #4
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Not as much as you would with stronger lighting....80w of light is not much for corals...I have mine under considerable more light...

If you are looking to have corals you will need to upgrade your lighting....
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Old 09-16-2008, 02:35 PM   #5
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From my understanding, green star polyps along with all sorts of other mushrooms and certain other corals, do not require HO lighting. Is my research on that incorrect?
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Old 09-16-2008, 02:37 PM   #6
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They don't require it and will survive in lower light but they will benefit from more light then you currently have. Look at some T5s to go along with what you have and you will be surprised with the difference in growth and the look of your tank.
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Old 09-16-2008, 02:40 PM   #7
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+1 on the T5's
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75g Reef.
Wet/dry converted into sump with a Bubble Magus NAC7 cone skimmer, MAG7 return, 200 micron filter socks, Vortech MP40w + two returns for flow. Current Sundial T5 + two retro Icecap T5's (6 bulbs),
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Old 09-16-2008, 02:40 PM   #8
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I will certainly do that. Do you think a 4 ballast T5 unit with 2-actinic and 2 65k bulbs would do a good job on my 75 gallon?
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Old 09-16-2008, 02:44 PM   #9
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Absolutely. That would be enough light to support some SPS as well.
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Old 09-16-2008, 02:45 PM   #10
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I will certainly take your advice on this. Thanks for your input everyone.
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