File :-(, x, )
skrimps Anonymous
ok so I work in... at. a marina. I have to handel live bait (shrimps and pin fish) we have 4 tanks we keep the shrimps in, the tank size are like 4x4x4. im not exactly sure what kind of filter it is (like that its called) or what kind of pressure system it is (the water does some what circulate).
anyways i have a question, I was wondering if annyone could answer me, what would be a proper ratio of oxygen to shrimp (excuse my retarted english).
I ask this becaue my boss sticks anywere between 15-25 thousand (probly more i think) shrimps in the tanks, and part of my job is to scoop out the dead, which i hate ( for more reasons), Soooo many of the poor little guys die, ( like last week more then 10 thousad of them died overnight) i think its overcrowding, he (my boss the retard) thinks its, ewll he uses a lot of excuses, any ways i wanted to present him with a formula showing him that overcrowding is the key reason a hole load of them die.

shit that was long.
>> shrimps Anonymous
     File :-(, x)
You need more water, it has to be very cool, since those fellows are deepsea/seaflorr creatures, the Temp shouldnt go much over 12 celsius, not so easy in shops. then oxygen will help, but its not all, the little buggers have no chance to get food in such crowds, and they suffer from stress because of numbers and pheromones...one dead is frightening others to death because of his "stink"...and dying shrimp produce piosonous proteins.
all the water has to be changed every hour at least...only for this reason. look at the pumps, there should be a plate telling the litres per hour...then look at the tank...its nearly the same with breeding fish.
>> Anonymous
If foam is forming at the top of the tank, that's bad, it stops oxygen dissolving from the air into the water

Sometimes this happens in poorly filtered aquarium tanks
>> Anonymous
>>247758
12 ?! goodness i think i saw it at 73 but i dont think that was celsius. yeah we know about the "stink" thats one reason we have to keep scooping the dead out, 1 dead = 10 more dead. as for the foam he drops a cople drops of some white kinda thick liquid wich makes the foam go away but makes the water darker somewhat. ill take pictures of the tanks and the pumps and all that, I just wasnted to show him some type of evidence or equation or formula showimg the "key" reason so many die is because of over crowding.
>> Anonymous
The main reason the shrimp are dying is probably not oxygen, it's probably WASTE.

Shrimp waste (just like human urine or fish waste) contains ammonia, which is poisonous. The ammonia breaks down into nitrites, which are also toxic. The shrimp are being poisoned by their own waste products. If you want to confirm this you can get a test kit at any pet store which will measure ammonia and nitrites and tell you if they are at OK levels or not.

A very large biological filter will help reduce this problem. For example, a POND FILTER. This will also have the side benefit of better aeration. Another option if your shop is close to the water is to pump in water from the bay/ocean constantly and let the wastewater go back into the bay. This will help get rid of the waste too.

Get on Google and search for "nitrogen cycle" or "cycling an aquarium" and you will get all the information you need.
>> Anonymous
>>247802
that sounds like a great idea, unfortunately the place i work is a marina so the only water near by ( id say about 30 feet form the tans themselfs) is probly not very good water since we keep boats on the water also , gas , oil, and just plain nasty stuff must be and is at times all over the water. the better filter system sounds like a more realistic alternative ( btw the gulf is about 3 miles from the actual marina).
I do get/understand that the waste is what is killing them, but my point/question is, the more shrimp, the less oxygen, the more die, wich in turn killes even more no ? ( Fibonacci number/ sequnce ).
so the less shrimp the less waste, the less dead no ?
>> Anonymous
dude, theres money there!
>> Anonymous
>>247934
How do you think your fish would feel if you never cleaned it's tank?

How well do you think it'd fare if there were a thousand other fish in a small tank, all shitting in it? Does that sound healthy?
>> Anonymous
>>247934

The issue is that oxygen depression kills very slowly, whereas an ammonia and/or nitrite spike can be acutely lethal. Furthermore, the decomposition of a dead shrimp generates nitrates directly without the ammonia step. So, as a shrimp dies it stops producing ammonia waste. But, the body itself becomes a giant nitrate factory.

Still, you can easily test this. As I mentioned above, you can get simple test kits in the aquarium section of any pet store. The tests for Ammonia and Nitrates are very common. Any pet store should have them. There are tests for dissolved oxygen as well, but I don't know how common they are. You can certainly get them online. Test your water and then you'll know which problem(s) there are.

The low oxygen % is very easy to fix with an aerator or an aspirator nozzle in one of the filter pump lines.