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.
A tank is typically 5 by 8 feet, but sizes can vary. Find both ends of the tank using this method and mark them. Keep in mind that there may be rocks, pipes and other debris that feel like the tank, but are not. The top of the tank is usually found 2 to 4 feet beneath the surface of the ground.