Hi koolman,
Pls answer the following question as this will help you know what the problem is.
1. Is your tank cycled?
2. How long has your tank been running?
3. What is the size of your tank?
4. What are your water stats?
5. Have you use any toxic sprays? Fumes tend to penetrate your tank thus poisoning the fish.
Mollies are generally hardy but will not survive very well if your tank hasn't cycled.
I suggest you do fishless cycling for that case.
Pls answer the following question as this will help you know what the problem is.
1. Is your tank cycled?
2. How long has your tank been running?
3. What is the size of your tank?
4. What are your water stats?
5. Have you use any toxic sprays? Fumes tend to penetrate your tank thus poisoning the fish.
Mollies are generally hardy but will not survive very well if your tank hasn't cycled.
I suggest you do fishless cycling for that case.