over kill

I have a 10g with a reg. powerfilter(got from friend so dont know model) a stringray elite(for a 29 tall) a wall of "bubbles" a wierd air stone the air is hooked up to a elite 803(for a tank 30-75g)
is that amount of Oxygen to much for rainbow darters

no

just thinking I had a fathead minnow in there that never came out of a little cave after I put in all the extra pumps/filters/giant airstones not even to eat(nearly starved after not eating for 3 days so I had to put him back in my 55g)

There can be too little, but is there such a thing as too much dissolved oxygen in an aquarium?

There can be too little, but is there such a thing as too much dissolved oxygen in an aquarium?

I think you can harm some fishes with too much O2 but it's a lot harder to have too much than too little.

Killier,

You might want to keep an eye on your tank temps with that much water movement. At this time of year you shouldn't have too much trouble. I would recommend checking your tank temp vs. ambient. If you see a large difference in temps you may need to get rid on one of the filters once the warm weather kicks in.

I think you can harm some fishes with too much O2 but it's a lot harder to have too much than too little.

Killier,

You might want to keep an eye on your tank temps with that much water movement. At this time of year you shouldn't have too much trouble. I would recommend checking your tank temp vs. ambient. If you see a large difference in temps you may need to get rid on one of the filters once the warm weather kicks in.

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so your saying this is ok for darters
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just a pic at tthe filter/powerhead I'm useing

Interesting looking gismo. I have never seen one like this. So this thing is submersable and it is a power head and filter at the same time. What I mean is does it attcah to an undergavel filter but also have its own filter media in it??

looks like water is sloshing out lol

Looks like way too many air bubbles to me.

I currently have about 50 darters in a ten gallon with just an HOB filter. About all you need. (of course just temporary with this many darters in one tank).

I'd cut down a little on the bubbles though. They may like current.. but that's a little overboard imho.

the stingray filter is a power filter/power head you dont hook it up to a underground filter.
teleost you were right I had to take out my smaller filter
the tank now has 3 rainbow darters,redline darters, 4 NRBD and a madtom(dont know what species) its alot of fish but with weekly 20% water changes I keep nitrates below 10ppm
I'll get a pic of it when my cameras fixed

I have two small HOB biowheel filters on my fifteen and a small sponge filter. I like that combination versus one filter. And with the bubbles from the sponge filter they just rise to the top and never disperse downward. So When I do my 25% water change every month the sponge stays untouched unless it is totally trashed but it usually is not because the mechanical filters removes the solid waste. Then also when I do my 25% water change I only will clean or replace one filter cartridge and then the next month clean or replace the other. Keeps the system very stable. I used to keep tropicals that were very sensitive to any sudden water parameter change in the smallest degree so that is why I have this type of set up on that fifteen gallon tank. Kind of like a flywheel on a car you know. A nice safety net so to speak. Now I have blue fin killies, rainbows I am holding for who ever wants them. I caught them for one person in mind but he said he has enough from my last shipment to him. If anyone has some banded, or black banded sunnies for trade for rainbows let me know. These rainbows will make your eyes pop out. Very beautiful. I also have my baby blue spots in there growing out, and one very young tadpole madtom for a new tank I will purchase soon. My blue spots are ~ 1.5" on average. Some a bit smaller and some a bit larger. I am getting five more in a trade of tennessee snubnose I sent up north. I want to set up a larger tank with just Banded, Blues Spots, and Black banded. I am a bit aprehensive on trying to keep black banded since people say they are hard. But I have kept sensitive fish in the past with no problem so I want to give them a go. I would not mind having a species tank just for them. Such a elegant looking fish that black banded sunnie is.
So again I have plenty rainbow darters for trade. I will consider something beside the sunnies for trade but has to be small species not longer than ~ 2.5 inches or so.

And of course pretty helps. Especially pygmies.