sually place larger tanks on the same stand which has been used for their smaller aquarium, believing that it will hold! Adding 100% more weight will start a chain reaction of the essentials. Make sure the stand you use can withstand 20% more weight than you place on it. Cabinets are good, but only if they are made from actual wood. Mounting to a wall is still an option, just make sure to reinforce the support with studs. Without them, you can expect plenty of water and fish on your floor. Using a suitable amount of gravel is an essential element of all aquariums. How much do you need? The unwritten rule is to add 1 pound per a gallon of water. Adding slightly more, up to 1.5 pounds per a gallon of water is possible, but it will seriously increase the weight of a tank. Adding less than we mentioned isn't something you should do. Low levels of gravel can have a serious, negative effect on the ecosystem of a tank.
Filtration system
None of the filters, filtration systems or additional equipment from your old tank can be used for a 100 gallon unit. It is essential to acquire all-new, specifically developed equipment for a tank of this size. It must filter a lot of water, so power is needed here. We will also add that mistakes here are very expensive, so don't try to save money on filtration system! Now, you will have to wait until the tank complete the cycle process, or use nitrogen cycle method to speed things up.