How many fish? - Page 2 - Tropical Fish Keeping - Aquarium fish care and resources

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post #11 of 21 Old 12-30-2008, 07:34 AM Thread Starter
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It seems to me that disrupting the enviroment (moving rocks) always ends up in someone's fate. I have lost a nice sponge crab, a fire shrimp, two cleaners and two peppermints trying to move rocks and chase this tang. (These were all at different times of course)

It is highly improbable that I could remove over 50 lbs of rock to catch these fish. I also try netting during feeding time, but that tang knows all to well what a net is...



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post #12 of 21 Old 12-30-2008, 09:46 PM
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yes! it will relieve some of the biolload as I stated in my previous reply. ie; your total water volumn is your tank capacity plus the capacity of the sump. your tank and sump is like having a larger tank. however you are still limited on population because of the available space in the tank proper.
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post #13 of 21 Old 12-31-2008, 01:02 AM
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if you have killed so many things moving rocks maybe you should be more careful whenever you do it. ive done a number of moves of my rock and havnt lost anything yet. it takes alittle longer but nothing perishes in the process.
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post #14 of 21 Old 12-31-2008, 06:10 AM Thread Starter
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Yeh, it's mostly those sensitive shrimp that die when I move the rocks. The part-time kid at the LFS has the same problem. I can imagine that moving the rocks probably screws with the PH of the water, or changes the chemistry of the water enough to harm those little shrimp.

The bottom line is, if I catch him, I will release him. He's small now, so I have some time.



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post #15 of 21 Old 12-31-2008, 09:11 AM
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Yeh, it's mostly those sensitive shrimp that die when I move the rocks. The part-time kid at the LFS has the same problem. I can imagine that moving the rocks probably screws with the PH of the water, or changes the chemistry of the water enough to harm those little shrimp.

The bottom line is, if I catch him, I will release him. He's small now, so I have some time.
I don't think moving rocks has any effect on water chemistry.
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post #16 of 21 Old 12-31-2008, 09:31 AM Thread Starter
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I am under the impression that disturbing the Sand Bed releases the toxins converted in the nitrogen process. Most of my rocks are buried under the sand bed, with the bases almost touching the bottom of the tank.

And its not like I'm squashing these poor little suckers, they just die after I disturb the tank. I probably stirred up some surface detritus and settlement.

But you guys MUST be right...It's probably just a coincidence that those sensitive little shrimp kick the bucket after I stir up the tank moving rocks and disturbing sand and what not.

thanks.

p.s. - my original question, "how mahy fish?" was asking if installing a sump relieved some of the bioload. This topic got of course and I have yet to recieve a solid answer.



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Last edited by wake49; 12-31-2008 at 09:33 AM.
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post #17 of 21 Old 12-31-2008, 11:53 AM
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you are not going to get a solid answer of how many fish.

saltwater is compeletely different from freshwater as there are more factors. first of all it comes down to what kind of fish, then factor in territories, compatibility, swimming room, less oxygen content then freshwater, so you cant get a concrete answer to how many fish you can keep. a sump will just increase water volume and dilute pollutants, it will not increase the swimming room you have available in the main display (you should also consider - room for the live rock) i would say its better to be understocked then overstocked, the less of a bio-load you have the cleaner your water will be for corals to thrive.

i believe you said you have a 46 gallon with a 15 gallon sump?
well i have a 46 gallon bowfront and 45 gallon sump at the momment and have 2 clowns,1 orange spotted goby with a pistol shrimp and 1 yellow sleeper goby, when i go to the 80 ill prob add a yellow tang and MAYBE a yellow headed jawfish but thats down the road.
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post #18 of 21 Old 01-01-2009, 10:04 AM
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In a typical marine aquarium which relies on a DSB, live rock, and a protein skimmer, the bioload rarely becomes an issues, sump or not. The territorial behaviors of the fish and corals will determine your ability to add additional livestock.

So, if you think the behaviors of the animals in your tank will allow for additional livestock, then go for it.

The simple answer to your question is YES, your tank can handle more bioload. But this is a technicality because bioload is almost never an issue to begin with.
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post #19 of 21 Old 01-05-2009, 09:29 AM Thread Starter
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Thanks Mark, and to all that have replied. I have a DSB both in the display and the sump, and I run a Seaclone 100 skimmer in the sump. I see no territorial issues with the inhabitants.



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post #20 of 21 Old 01-06-2009, 05:53 AM
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Then, if you do not believe territorial behaviors to be an issue, you could probably add another fish. Unfortunately, using this logic, you would continue to add fish until an issue developed. I would find a nice comfortable stocking level that is pleasing to the eye and then stop.

For example, my 37 gallon reef has a Coral Beauty Angel, 2 Perc Clowns, 1 Six Line Wrasee, and 1 Cleaner Wrasee. I could probably add more, but the aquarium looks fabulous and colorful, so why take any chances with an established pecking order?
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