yes you can but also it depends on what fish you got(:
Usually from a hot water tank.
you have to make shure that the tank is clean and ate the right tempiter or you will kill the fish
No doing this will kill the good bacteria in the tank and end up killing all your fish guaranteed. Good bacteria grows on your gravel and in your filter that breaks down the harmful waste products of your fish into a harmless substance. This bacteria keeps your fish alive. You also never do full water changes because it also kills the bacteria.
Generally a filter on a fish tank needs to be replaced once a week. If the fish tank is especially dirty, then it may need to be replaced more often than that. Generally, the more fish there are in the fish tank, the more often the filter will need to be replaced.
That depends on the weight of the fish as compared to the weight of the water their bodies displace. If it's a heavy, dense fish, then the tank with the fish would weigh more. If it's a light, less dense fish, then the tank with water only would weigh more. This assumes that the water displaced has been removed from the tank, right? If you are adding the fish to the water then I think it should increase the weight regardless of the density of your fish. The question then might be, does the fish weigh less when it is swimming than it would on a dry scale?
No hot water may be coming out of the faucet due to a problem with the water heater, such as a malfunctioning heating element or a lack of sufficient hot water in the tank.
That's just how long it takes to get the water that is sitting in the pipe out. Unless you have a circulating pump on the line so that there is always hot water at the faucet, it always takes a bit of time for the water to get hot. The hot water is in the tank, not the pipe connecting it to the faucet. There is nothing in the pipe to keep the water hot.
Your water is orange?! I should get the water tested right away and you should only be taking 25% of the water out a week or you will completely mess up your tank.
Cold water may be coming out of the hot water faucet due to a malfunction in the water heater, such as a broken heating element or a faulty thermostat. This can cause the water in the tank to not be heated properly, resulting in cold water coming out of the hot water faucet.
Salt Water Fish
Assuming the dirty fish tank has had fish and water in it, without doing various specialised water tests it is impossible to tell what is in it.
It might be unsafe to drink because fish food, fish scales, fish waste, and many different kinds of bacteria are in fish tank water.