3a : to place or invest in such a manner as to make unavailable for other purposes their money was tied up in stocksb : to restrain from normal movement, operation, or progress traffic was tied up for miles. 4a : to keep busy was tied up in conference all dayb : to preempt the use of tied up the phone for an hour.
A 20-gallon tank is the minimum tank size for a reef or saltwater tank. Although it may be harder to maintain than a bigger tank, it is possible to create a saltwater tank using 20 gallons. Be mindful of the fish stocking to ensure that too many fish do not over-pollute the system.
Tanks can be found in pet stores and specific fish stores. Previously-owned saltwater aquariums are also available on the market for less than brand new tanks. When choosing the size, consider where the tank will go, and how many fish are expected to live in it. Allow 10 gallons (37.9 L) of water per fish. For example, 10 fish can live in a 100 gallon (378.5 L) tank.