you have to get the silph scope from Giovanni at there celadon headquarters (inside the game corner)
just keep going to celadon city and infilitrate the game corner beat team rocket get silph scope from Giovanni go back to the ghost:)
Where is this room?
You cant. You need to get a silph scope at Silch Co. in Saffron City. Most of them are gastly's but some are cubone's. The lvl 30 ghost that wont let you pass is actually a marowak. it is an actual ghost so dont try catching it.
shadow ball is the strongest ghost TM
I don't know what tower you're talking about but I'f it's the ghost one you need the silph scope to see the ghost, It's a marowack but you cant capture it, because it's still a ghost but you can see it with silph scope.
Get the silph scope.
You cannot catch the ghost in the Pokemon Tower until you reveal what it really is.
There is no clock in firered in fact time doesn't pass in that game.
Doesn't exist.
HOW AM I SUPOSED TO KNOW ASK SOMEONE ELSE
With the Rainbow Pass.
by looking.