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Old 09-04-2006, 10:54 AM   #1
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Keeping minnows?

I have been trying to raise minnows in a 30gal tank but for some odd reason they begin to die at a rate of atleast 7 a day after doing well for the first week or so.

I only keep around 20 in the tank at a time so over crowding isnt an issue.
I check that my water is balanced everyday.
I feed them natural foods recommended by the local fish and wildlife.
I filter the tank with a 40gal whisper filter. Due to how messy the little guys are.
I also use a powerhead and under gravel filter in order to keep constant water circulation.
I invented a water cooling setup that maintains a water temp of 63F.

What might I be missing here or do minnows carry some type of sickness that is easily spread to others?
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Old 09-04-2006, 12:12 PM   #2
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if they are wild, its stress...

recommended wildlife food? what are you putting in there? what do the other fish recommend?

go with flakes

the current may also be too strong, as well as perhaps your lacking a heater?
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Old 09-04-2006, 12:23 PM   #3
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the current may also be too strong, as well as perhaps your lacking a heater?
They ought to be ok without one actually. Minnows are coldwater pretty much (or subtropical at a pinch). 18c-22c is a good enough temp for them.

What sort of minnows though?
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Old 09-04-2006, 12:40 PM   #4
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How long has the undergravel filter been working for?
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Old 09-04-2006, 12:47 PM   #5
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tank may also need cycling.

and while i know heaters arent mandatory, a slight amount of heat benefits the fish. chances are these fish were from a creek? so they do get some sunlight, and shallow water warms up fast.

but you dont need it, just an idea
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Old 09-04-2006, 12:51 PM   #6
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I am curious about that too.
It's not a big tank, I wonder if they would benefit from a water change from their own creek.
I have always wanted to take a go at local fish, but have never had a tank big enough.
Felicitations. Jeff
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Old 09-04-2006, 12:54 PM   #7
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Just a thought: is there adequate circulation?
Minnows, I imagine, must love it. Jeff
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Old 09-04-2006, 12:56 PM   #8
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Do you have a way of cooling the water? They are cold water fish. Check the temp in the creek.
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Old 09-04-2006, 02:25 PM   #9
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I catch them out of a mountain stream where thier water flows at a decent speed, for this reason I added a powerhead to thier tank.
The natural water temp of the stream is anywhere of 60-65 degree, The water temp of thier tank ranges within the specs.
I feed them blended up Grasshoppers, worms, ants and bloodworms. They love it. I will go out tomarrow and buy the wildlife food, I've seen it before at the pet store.
I try to keep my water changes at once a week(including the undergravel filter) but after I lose a couple minnows, I do a 50% water change inorder to correct the problem. "No Hope" Starts a chain reaction.
They dont seem to show signs of stress unless being netted, if it were stress how can I help make them more at ease?

When they die, it looks as if thier stomics open upand thier insides drop out. I dont know if that helps or not? This is why I was thinking there could be a sickness that they pass to no another or its just natural that this happens?

I found this site over a year ago and am so glad I did. You all are such a great help in these times of need!
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Old 09-04-2006, 02:27 PM   #10
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Now that is interesting.
Could it be bad/wrong diet that is killing them off.
Earlier, you said it took about a week before they became ill.
Keep us posted. Jeff
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