Well these aquariums are keeping me on my toes! I've got 4 guppies, 5 platies, and 2 red cherry shrimp in a 10 gallon tank. They are moving to a 30 gallon but that's taking longer than I hoped since the water is still so cloudy! I rinsed the gravel but maybe not enough and I have so many questions. 1. Should I just wait for the water to clear or do a water change? 2. Do you think my platy is pregnant? 3. Yesterday I thought I saw a tiny snail but then thought I had imagined it. Today I clearly saw 3 snails. What? How? And what should I do? 4. What do you think of those gravel cleaners that connect to the faucet? The 10-gallon was very easy to do water changes on but I'm overwhelmed with the 30. Worth the expense? Brand rec? Thanks!!