if you can live with the smell
nothing
Its a good if it doesn't smell if it smells that can be a bad thing like ...... dead hermit crab, mold or mildew so its a good think. my tank doesn't smell that's a sign of a good tank and a happy hermit crab
Provided it is properly cleaned, driftwood can be a good adition to a fish tank.
One could purchase a good fish tank light from many places. For instance, many local pet stores sell good fish tank lights. There are also some websites where one may purchase good fish tank lights, such as eBay and Amazon.
Smell the tank, if it smells like a dead fish, then a hermie is dead :(:(
If you mean the smell, you can use carbon in your filter. You can get aquarium carbon from an online retailer such as www.bigalsonline.com
Yes, fish can see you through the tank because they have good eyesight and can see through the glass.
it depends on how big it is if it is a goldfish or beta it can be in a bowl.If it is one of those big tiger fish or aqarium fish then put it in a big tank. A fish will grow to the size of the tank or bowl. For instance, say a goldfish is in a tank, it will not grow as big as the tank; however it will grow big enough to be able to swim in their environment. The fish will not overgrow the tank. I had a six inch goldfish in a thirty gallon tank.
Fish have nares, those little holes that look like nostrils on top of the mouth. The fish pass water through the nares and is analyzed by sensory receptors and the fish responds to those senses. Yes... If they don't wash....
A properly cycled tank that is not overstocked, and has the proper amount of filtration should smell like clean wet earth (dirt). If your tank has a fish odour, it's possible that either a fish has died that is rotting in the tank, or that you are not doing weekly water changes of at least 50% of the water.
Fish smell with their noses :)