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Old 11-02-2013, 09:42 PM   #1
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Gaseous exchange stocking method inc. coral.

The gaseous exchange method is how I've always stocked my tanks, how does that work with a marine tank? Is it "display area" only, or "all areas" able to permit gaseous exchange, sump, ref etc. this makes a big difference in my sums, I can't find anything anywhere about this? Also how do you factor corals into all of that in terms of bio-loading?
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Old 11-02-2013, 11:49 PM   #2
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Stocking a salt tank is completely different from freshwater. I have never used that method for measuring stock or bio load. It's more about fish compatibility and temperament when it comes to stocking a tank - some fish require long tanks because they are free swimmers (tangs in particular) and knowing who is going to get along with who is also important. Then there are species that can't tolerate their own species but are peaceful to others. It's fascinating really. I use liveaquaria.com and ask here for advice on fish stocking levels. Be prepared to be disappointed when you realise you can only fit 2 fish in a 20g, only have a single pair of clowns and can't put any tangs in a less than 6ft tank, but that's the way it goes! It will all be worth it in the end...
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Old 11-02-2013, 11:58 PM   #3
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Corals don't really get factored into bioload IMO. You can fit as many as you can as long as different species aren't to close as they will sting each other.
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Old 11-03-2013, 12:06 AM   #4
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I am aware of most of those elements. I will use 10 times rule on fish size I've chosen a few things I think that should work together. The list is #springers demoiselle, jaw fish, #mandarin, rainfords goby, thread fin cardinal, #paired shrimp goby, #flame angel. That's the list for this tank. It will be 105x45x40cms (LxDxH) with 45x45 sump to house skimmer and pumps. there will be overhead refugium 90x30x35 with 60x30x28 area for rock and algae, this missing part allows for baffles and pipe entry/exit. The hashed ones are the short list. By my maths I can get 39cm of fish. There will be a skimmer, one circ pump one pump to ref. How do you factor corals in? It's about 280 litre. 61 imp gal. Or 74 US liquid gal.
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The corals I like I thought may fit are yellow sun, Xenia, bubble, s. Hystrix.
Snails nerite and trochus.
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Old 11-03-2013, 12:09 AM   #5
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There is no stocking rule as to size of fish vs. tank size. You couldnt put a 10 inch fish in a 24 inch tank for instance.

I'm not sure what tank size you are going with, I'm american here we dont use the metric system lol
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Old 11-03-2013, 12:12 AM   #6
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Quote:
Originally Posted by bribo12 View Post
Corals don't really get factored into bioload IMO. You can fit as many as you can as long as different species aren't to close as they will sting each other.
I thought coral excrete ammonia, like urine. They eat? And have guts, or does that depend on xoozanthellae? Like the difference between sun coral and bubble coral.
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Old 11-03-2013, 12:14 AM   #7
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Quote:
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There is no stocking rule as to size of fish vs. tank size. You couldnt put a 10 inch fish in a 24 inch tank for instance.

I'm not sure what tank size you are going with, I'm american here we dont use the metric system lol
That is common sense.
The rule is ten times body length equals tank length for active species and six times for sedentary species.
Divide or multiply by 2.54 metric/imperial
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Old 11-03-2013, 12:18 AM   #8
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Corals do eat and excrete waste but it is in such minimal amounts compared to fish that it doesn't really count. The sun coral will probably create a little more waster than coral with zooxanthellae but they really only contribute more due to the fact that they require feedings and get no energy from light. I see no problem with those corals other than all of them have different care. Seriatopa hystrix will need high light high flow while the bubble is mod light and flow and the tubastrea is low light moderate flow. I have well over 20 species of corals in my 20 gallon and see no issues with any of my parameters.
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Old 11-03-2013, 12:27 AM   #9
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- some fish require long tanks because they are free swimmers and knowing who is going to get along with who is also important. Then there are species that can't tolerate their own species but are peaceful to others. It's fascinating really.
All of this applies in freshwater. I've kept fish for 8 years. Freshwater and brackish.
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Old 11-03-2013, 12:31 AM   #10
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Corals do eat and excrete waste but it is in such minimal amounts compared to fish that it doesn't really count. The sun coral will probably create a little more waster than coral with zooxanthellae but they really only contribute more due to the fact that they require feedings and get no energy from light. I see no problem with those corals other than all of them have different care. Seriatopa hystrix will need high light high flow while the bubble is mod light and flow and the tubastrea is low light moderate flow. I have well over 20 species of corals in my 20 gallon and see no issues with any of my parameters.
I'm getting somewhere! I realise they have different care, I have to read it from a book as I don't yet own anything marine. I don't want any errors. I thought careful placement may have ironed out those issues, up and down in the tank, shadowed by rock etc.
I only have a few coral books as a guide.
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