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not enough oxygen in tank???
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SPENCER
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PostPosted: 2003.05.05(Mon)12:33    Post subject: not enough oxygen in tank??? Reply with quote

I'm still trying to figure why I can't seem to keep more than 1 fish alive in my 55 gal tank. I know my filtration system needs to be upgraded but I think it should be able to handle 2 or 3 small fish. the LFS said that I might not have enough oxygen in the water to support 2 or more fish. any ideas?
btw, I'm running an emperor 280 w/ 2 powerheads(170 gph ea). the only fish to survive more than a couple of days is a yellow tang. thanks.
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SLACkra
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Joined: 06 Feb 2003
Location: Melbourne, Victoria, Australia

PostPosted: 2003.05.05(Mon)13:12    Post subject: Reply with quote

OK. first of all what are your water params? is there anything going on in your tank? also when do you find the fish dead? do they die over night?
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SPENCER
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PostPosted: 2003.05.05(Mon)14:04    Post subject: WATER INFO.. Reply with quote

water quality is good. ammonia, nitrite, nitrate, all zero. pH & salinity are good. even had the levels rechecked by 2 different LFS. same results. tank has been up for 4-5 months. can't seem to keep any small fish alive. used damsels to cycle the tank. returned the lone survivor of 6 to the LFS & bought 4 green chromis. LFS checked water. 4 days later, 1 dead fish, water quality good. lost a fish every day until they were all gone. kept checking water. nothing unusual. would find dead fish in the morning & evenings. checked water bought 2 clownfish. they made it a week. added a regal tang in w/ them. 3 days later the biggest clown fish dies. the next night the small clown dies. then the tang dies a hour or 2 later. water quality still good. added a 4-5 inch tang. he's still alive almost a month later. LFS says I need to invest $500 in a filter system. he thinks I don't have enough oxygen in the water (not enough water movement & inferior filter system).
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GrendelPrime76
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Joined: 17 Apr 2003
Location: upstate ny

PostPosted: 2003.05.05(Mon)15:51    Post subject: Reply with quote

could it be that somehow any toxins got into your tank? I had a similar prob a few yrs. ago turns out I had family up and the kids threw a few pennies in my tank Sad drove me nuts trying to figure out what happened.I had no clue what the prob was but every thing I put in the tank only lasted a few days, take a look around your tank and see if anything is rusting,sometimes its something small that causes the most problems.
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The Old Salt
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Joined: 01 Apr 2003
Location: Alabama

PostPosted: 2003.05.05(Mon)19:28    Post subject: Reply with quote

I don't think oxygen is your problem. Nor is current, since you've got a turnover over six times per hour.

If your water is really checking out fine, then the problem is something you're not checking FOR.

My guess right off the bat is some sort of toxin, but that's just a wild guess.

As for your filtration, it is woefully inadequate. You don't need to spend the 500 bucks your fish store wants you to, but you really do need to increase your filtration significantly. I'd add a hang on the back canister filter and a decent skimmer, like a Prizm. A biowheel attachment on the canister filter would be nice if you have room. Only about 175 bucks and you're in business.

A massive water change is also needed at this point. If you have some sort of poison in your tank, you'll need to dilute it.
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Huntress
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Joined: 05 Feb 2003
Location: Houston TX

PostPosted: 2003.05.05(Mon)20:06    Post subject: Reply with quote

Here is spencer's original topic so it will give you more info on his tank and his problems.


http://www.aquahobby.com/board/viewtopic.php?t=1512&start=0
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spencer
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PostPosted: 2003.05.05(Mon)21:07    Post subject: new equipment just added Reply with quote

OK, I just bought a protein skimmer tonight(seaclone 100). I'll give that a week or so & see if anything changes. I appreciate everyone putting up with my questions. now all I got to do is figure out what to put in my tank with my yellow tang.
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