the farming of fish, crustaceans, molluscs, aquatic plants, algae, and other aquatic organisms.
Questions tagged [aquaculture]
9 questions
3
votes
3 answers
Would Bubling Oxygen Through "Dead Zones" Like A Fish-Tank Make Much Difference?
I am a dilettante when it comes to dead zones. I realize that they vary from fleeting algal blooms to continuous dead zones. For the continuous dead zones it would seem to me that adding a "bubbler" like for fish tanks might help restore the…
Dale
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Can hydroponically grown plants selectively uptake nutrients, or return excess water?
If a plant is growing with the roots in the water but the rest of the plant above water, does that plant have to absorb all of the nutrients in the ratio that they exist in the water or can it absorb what it needs and reject/return what it doesn't?…
BThompson
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2
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How to grow a spirulina biofilm on a carbon/graphite cylindrical cathode?
I am trying to grow a spirulina biofilm on my cathode for a fuel cell but it doesn't seem to be sticking to the cathode. I have a culture of spirulina and I've submerged a few cathodes in it to try and develop a biofilm. This is not working. Is…
Evan
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how origin of koi carp is different from goldfish
where did koi-carp originate? how are they different from goldfish? Wikipedia say that goldfish originated by genetic mutation but what about koi-carps?
Arun kumar
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Why did S. serrata die?
We are interested to farm Scylla serrata which is a type of crab. We introduced the crab weighing 800 g into a environment with 22 ppt salinity with a pH of 8.2. The crab was feeding on around 12 g of chicken meat daily. However at the end of the…
Tung Yit Xiang
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vote
1 answer
Why are some chemical dangerous to aquatic environment only?
Recently I was changing the thermal grease on my PC. I have noticed on the back of box, that the grease is not dangerous when ingested or when touched. But there was specifically stated, that is dangerous to aquatic organisms.
What is so special…
jnovacho
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1 answer
Fresh Water Fish Identification
A couple of days ago I just adopted a group of 7 fishes, 2 inches long each, orange-pinkish color, a black dot before the tail, very fast, active and peacefull. Looks like a kind of tetra fish. Anyone?
Lacobus
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1 answer
A plant in my aquarium seems to be growing small plants under its leaves, what's going on?
In my aquarium I have this plant. I think it's a kind of swordplant. I've loosely attached it to a large piece of driftwood in the hope that it will grow itself on there, I saw that they had done the same in the petstore.
Now recently other plants…
Jasper Kennis
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Are there any natural forms of aquatic vegetation which do not stand up in water?
We are carrying out some experiments where we study influence of underwater vegetation on waves. Unfortunately, the stalks of artificial 'vegetation' which we have seem to be too dense (or too stiff). The stalks sort of stand up a bit when you put…
Tom
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