I change the water every 2 weeks. Both tanks have fake and real plants. On the 45g I have 4 mollies, 5 platies, 2 dwarf gouramies, 3 goldfish, 2 black skirt tetras and a small pleco. No plants have been lost. On my 10g I have 2 mollies, 4 guppies and a small albino pleco. Also no plants have...