Let me introduce my fish

We have just finished doing the weekly clean of our tropical fish tank.  We have had the tank for just under a year and I can honestly say we've not been very fortunate with fish, as a lot of them have passed away over this time. We have had some gorgeous fish but we went through a phase where they just weren't surviving and we are pretty certain that a bug or virus must have got into the water.  We then became a bit disheartened with it all but we have decided to give it another go. Fingers crossed and I don't want to speak too soon but upto now things seem to be going pretty well, to the point we now also have a nursery set up in it, yes we have 3 baby balloon mollies that were born approximately 3 weeks ago, we did have 4 but unfortunately 1 did die. So our tank currently consists of 5 neon tetras, 2 silver dollars, 2 adult balloon Mollies and 3 baby mollies which we hope to release into the main tank in a couple of weeks time.  We have decided to build it up again slowly as we don't want to go through loosing fish again like we did before.  Once the babies are established in the main tank then we will look to get something else. I have to be honest and say that there's nothing nicer than putting the light on in the tank in an evening and just watching the fish swim around, it's really rather therapeutic! I would love one day to have a marine tank as I think marine fish are amazing but that won't happen for some time as we really need to know what we're doing with the tropical ones first.  The moral of this story is don't give up on things, like I said we were ready to pack it all in but seeing babies born in the tank has made us more determined than ever to continue with it!