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Old 03-28-2010, 11:13 PM   #1 
truthequalslies
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Question cory cats

ok well i have 3 speckled corys: cory frank and bob in thisbe's 20 gal long its been up maybe a month and a half maybe longer now

i have a pennplax 30 gph filter

a jebo sponge filter (used as a co2 reactor for my diy co2 system)

a pennplax adjustable 100w heater keeps water @ almos 80 degrees

i add about 2 tsp of aquarium salt (for my gobies)

and some live plants

i want to cycle the tank later but have no money for a mater test kit a.t.m (also if anyone has any info on all i need on cycling please send it my way =) my fish will love you for it =P) so i just take some of my water every now and then to petco to mooch off of them for free water tests =P atleast to make sure the waters safe

so heres my problem about a week ago i changed a gallon of the water and then one of my cories started acting weird and just stopped moving around so i moved him to a seperate tank in case of sickness (2gal) and added a bit of aquarium salt he seemed to get a lil better over 2 days but still barely any movement then last night he was breathing heavily and had a small 'spaz attack' and this morning he was dead
i went to exchange him and have my water tested and they said everythings fine but my amonia was a little high so i vacumed my gravel and changed about 3 gallons and now another cory is acting as the other did (not moving and slightly on his side) but the other two are fine and wiggling all over the tank the only diferance in what i do with my water is i switched from amquel conditioner to seachem prime since i read such good reviews on it

what do you guys think is going wrong?

these are my first corys i've ever had so im not too familiar on how they are though i did read up a bit before buying
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Old 03-29-2010, 12:05 AM   #2 
dramaqueen
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Cories are very sensitive to water quality. If your tank isn't cycled then that may be your problem.
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Old 03-29-2010, 12:18 AM   #3 
truthequalslies
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Originally Posted by dramaqueen View Post
Cories are very sensitive to water quality. If your tank isn't cycled then that may be your problem.
V.V i was hopeing that wouldn't be the issue how would you suggest i care for them till i can get my tank cycled? thanks for the response dq =)
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Old 03-29-2010, 04:16 AM   #4 
Neelie
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my tank atm isnt cycled either and my corys are fine.
did you check the ammonia/nitrite? you might have had a spike and they didnt like it.
BUT usually corrys will act the opposite way if something is wrong, they swim hectically up and down and try to tell you something's up... so i dunno bout your guys really
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Old 03-29-2010, 08:40 AM   #5 
radiationbaby
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My boyfriend's angels did that when his tank grew some sort of fungus as being overfed for a few weeks. One of them died, but the other snapped out of it. He also had that problem when the tank water was the wrong temperature, but I don't think that would be your problem.
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Old 03-29-2010, 11:44 AM   #6 
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Cory cats are real sensitive to aquarium salt, not recommended to use any salt with this species, also, they are sensitive to most of the medication too.
Cory cats are social fish and do best in large groups of 6 or more to feel safe, you will see more natural behaviors when kept in schools and less stress related problems
When cycling with fish without testing products, make 50% water changes daily, but only vacuum the substrate 1 time a week, leave the filter media alone unless the water flow slows and then only give it a swish in old tank water so not to kill the good bacteria.
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Old 03-29-2010, 11:46 AM   #7 
truthequalslies
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Thankfully he snapped out of it but I don't understand why it only happens after I add new water
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