It’s worth taking your time in setting up your fish aquarium. Keeping in mind that 1 litre of water weighs 1kg make sure you double check your stand and make sure that it is going to be strong enough. For larger aquariums, they could weigh over 200kg so also check the floor is strong enough and level as any discrepancies can cause a twist in your tank.
Once placed in the correct position make sure you use a gravel cleaner to wash out the gravel thoroughly, you don’t want to have any dust in the gravel transferred into your aquarium. Also place all of your fish tank ornaments and rocks to make sure you are happy with the look of your aquarium.
Place all of your accessories like fish tank heaters, UV Sterilizers and fish tank thermometers in the correct place – this is much easier to do without water in the tank. DON’T TURN THEM ON until you have water in the tank.
Place the gravel along with any fish tank substrates into the tank, then pour water into the tank. Pour directly onto the back of a flat plate to make sure that the pouring of the water doesn't disrupt the gravel.
Once the tank is full you can get the filter going and turn on all of the fish tanks lights etc.