soap and water
if you can live with the smell
nothing
Provided it is properly cleaned, driftwood can be a good adition to a fish tank.
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
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 :(:(
Yes, fish can see you through the tank because they have good eyesight and can see through the glass.
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
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 smell with their noses :)
because the fish are fresh and smell
If a tank smells bad then you're doing something wrong! A healthy established tank never smells. It is probably heaped full of ammonia from fish waste and uneaten food, ammonia kills fish as well as really stinking! If your tank smells rotten then it's your fault and you need to step up your routine tank maintenance.