That must be it, i have lots of live plants in it. But on a sad note.. i woke up and both angels were dead.

I tested the water and ammonia was at 0, nitrites were at 0, nitrates were at 3, and ph was 7.6. The only thing i was adding to the water was vitachem and guarlic guard, because this was my quarantine tank. I really dont know why they died though...it doesnt make any sense. They both looked happy and healthy showing no signs of illness (ie. closed fins, listlessness, sitting at the bottom..etc).