Michelle,
Welcome.
There is going to be a lot to learn, and it will not come overnight.
Start with small steps. Learn about your water quality first. If you have poor water conditions, fish will not live.
Next you will need to learn about balance. It is rarely achieved, but it is always a goal.
Your vegetation needs to be controlled, not eliminated. It is part of the process and provides benefits when is controlled to the right percentages.
Aeration is a great thing, when used appropriately.
There is so much more. Others will give you great reading references.
The best advise I can give is to slow down. Make small changes and see what mother nature does with those changes and gradually get the pond to where you would like it.
Again welcome, there is so much to learn, but the rewards are so worth it.
