Help Me With Fishy And Plants

[roseykat5]

what to do with fish on top water is ther someting im doing wrong pardon my spelling ... i recently started with plants live plants and have a nurta thingy and works great but i did have nitrites a bit hi on the side as my cories are lite in colors so ive been changeing water 3 times this week every 2 days trying to fix the plm but i dont know and my danios are hanging on top so im thinking maybe not enough o2 in wter and how do i get more in tanks i have no air stones as my pump brke down grr
i want to do it right

 

[Musho3210]

water changes, nitrite indirectly suffocate the fish.

 

[MoonstruckMuse]

You're on the right track with frequent water changes. Aerating the tank with an airstone will be really helpful to the fish though, run out and get one asap if you can.

 

[backley420]

Not enough Ox?