mooncake
Member
Glad things are looking better now! I'd keep a careful eye on ammonia and nitrite readings still, to make sure they're at safe levels. Had you made any changes to the tank recently, like adding any new fish maybe?
I'm sorry to hear that, it is definitely an oxygen issue, but there are a lot of different ways in which you can end up with low levels of dissolved oxygen.Hi so my tank has been cycled for around 4/5 months now and then last night i noticed almost all my fish were at the top of the tank and my shrimp were all at the top of the tank? This morning i woke up to find one fish and 5 shrimp dead at the front of the tank?