ammonia and nitrite are toxic. nitrate is not. i would be worried about those- they are what's killing the fish.
btw, when we say ammonia, it's not much different than pouring a bottle of regular cleaning ammonia into your aquarium.
do water changes until ammonia and nitrite are ZERO.
add fresh water for top offs.
do water changes until ammonia and nitrite are ZERO.
.but i think this tank is stocked.
good deal!Wanted to give you guys an update. My friend had a nano cube that has been up for about a year now so I got all my live stock out. I think I might of lost the star cause he is shedding his limbs. I want my tank to finish its cycle, so do I let the nitrates,trites,amonia levels get high or should I keep doing water changes?