70 gallons means nothing - it's the physical dimensionsthat are more important. The lizard needs at least the length of its body (at adult size) for the longest side of the tank. You also have to take into consideration whether the monitor is an arboreal species (and would therefore need a high enclosure)
Incidentally - old fish-tanks do NOT make good vivaria for reptiles. Being of all glass construction - they do not hold the temperature generated by the heating system - and the thermostat (and heat source) have to 'work overtime' in order to maintain the desired range. 90% of heat generated will be lost through the glass - as opposed to around 5% in a purpose-built wooden vivarium.
A 1 gallon tank could have one betta fish, but you will need to be diligent about changing the water on a regular basis. The smallest tank that should be used, even for a betta, is a 2.5 gallon tank as it at least gives the fish swimming room.
IT depends on the size and type of bike. A sport bike may have a 2 - 3 gallon tank. A big cruiser can have 4 or more gallon capacity.
It depends on why type of car you have. Check your gas mileage
A Mercedes Cla takes a 13.1 gallon tank. This is a type of car.
Which type of monitor? Which type of monitor?
gold fish
A Betta fish!
Construction wise, in a live tank PT, both the primary & secondary windings will be placed on top tank. In a dead tank PT, primary & secondary windings will be placed in bottom tank.
A simple air driven corner filter should do the job in a tiny 5 gallon tank provided the tank contains no more than 3 guppies. The first basic rule is :- 1 inch of fish needs a minimum of 1 gallon of water. Your tank is nominally a 5 gallon tank which means when it is only filled to within an inch of the top and has gravel on the bottom, the most it will be holding will be around 3.5 to 4 gallons of water.
Guppies are usually 1 inch long, and a good rule of thumb is to have 1 inch of fish per gallon, so as many as 30 guppies will be just fine. Although, it might be nice to add some different fish occasionally.
Yes just make sure you have a lid to the tank with some type of lock to hold the top down or else they can get out pretty easily. ( I had experience lol) also make sure you have good bedding and i would recommend getting a small animal tank heater and put it under its homing area where it sleeps
The sticker type thermometers are not very accurate and tend to be affected by external temperatures. To better monitor your tank water temperature, you can buy a thermometer that sticks on the inside with suction cups