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#26
09/13/2007, 07:11 AM
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Yes, it is going very well with the tank. You can read all the details in the blog, I'll do a short summary here. At first there was an enormous growth of fast growing algae. Then the nutrient regime changed completely because there was suddenly no more N or P dectectable. So the algae became N and P limited like in nature. Cool! Just take a look at the picture below and compare with the ones above:
 This is evening lighting on August 27. Most of the algal mass seen here has grown in the tank. Much of it from spores or small pieces that have attached themseves to new locations Right now the tank is going through a new change. I see significant growth in the slover growing algae and more and more death among the faster growing ones. Exciting times ahead. Some more random pictures::    
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Jon Olav |
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#27
09/13/2007, 07:22 AM
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Nice!
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#28
09/13/2007, 10:56 AM
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How well do the common periwinkles clean the tank up?
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#29
09/13/2007, 04:47 PM
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I think they are quite efficient. They are definitely eating a lot. It is a bit hard to tell exactly since I don't know how the tank would be without them. Also, when there is enough nutrients they aren't even close to keeping up with the growth. But I have a feeling they have a great effect. Now that the nutrients are low I can see it better. When it comes to snails, size matters a lot. In the beginning I took small specimens from above low tide. They didn't eat that much and climbed out of the water. Then I started taking large ones from places permanently under water. They eat more, and adapt to the tank immediately. Now I think that there may be too little food for them all since the algal biomass is rapidly reducing as the tank seems to be more and more of a low nutrient environment.
The best grazers are the limpets though. They are really big and scrape the rocks asolutely clean. There are some problems with getting them to move around though, they are more stationary. Periwinkles complement them well.
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Jon Olav |
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#30
09/13/2007, 05:22 PM
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Thanks. What type of limpets do you have?
I'm seriously considering doing a coldwater reef myself with animals from the Gulf of Maine. Some of the inverts and stuff you have in Norway are easily found around the GOM coast. |
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#32
09/19/2007, 02:30 PM
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Awesome tank! I like it a lot.
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#36
09/27/2007, 12:06 PM
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looks great!
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Nothing good happens fast in this realm of underwater landscaping, only time will allow your reefkeeping and livestock to flourish! |
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