lack of oxygen in tank?? - The Planted Tank Forum
 
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post #1 of 4 (permalink) Old 08-15-2011, 07:17 PM Thread Starter
Algae Grower
 
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lack of oxygen in tank??

hey all,

I am getting back into planted tanks and am having quite a rough ride.

I have a few crypts, a sword and java fern in a 20H. I am using flourish excel, iron and potassium. the filter is a Fluval 404.

after 4 or 5 days, my fish are all gasping for air at the surface. plugging in a spare air pump cures the issue, but I have never had a need for an added air pump....

there is little surface agitation because of the output for the Fluval, which is still relatively new. It replaced a Rena XP that finally took a dump; the XP had a spray-bar across the back of the tank. is this something I should be using in the new setup?



any advice/ideas/help/suggestions are appreciated. thanks!

i have three main interests: home audio systems, aquariums, and cars ...the first two get all my money
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post #2 of 4 (permalink) Old 08-15-2011, 07:52 PM
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What is the temp?

Is this a new tank, uncycled?
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post #3 of 4 (permalink) Old 08-15-2011, 08:25 PM Thread Starter
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the temp is most likely near 80.... I can verify later when I am home

the tank is relatively new, but at least two months old. I did some major replanting/substrate disturbing, which kicked up a bunch of dirt/scum. some quick google research told me that high waste levels could factor in low oxygen... after the replanting I cleaned out the filter and replaced the carbon with new

i have three main interests: home audio systems, aquariums, and cars ...the first two get all my money
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post #4 of 4 (permalink) Old 08-15-2011, 08:39 PM
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How about pointing the nozzle up a bit so there is a ripple on the water's surface? That is the whole purpose of an airstone, the bubbles create a ripple.
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