Four people were arrested after the raid at Northern Lights just before 0100 GMT on Sunday.
Officers said there were about 1,000 people were in the club and they also found discarded cocaine and ecstasy, Class A drugs, on the floor.
Three other clubs, Bar Fibre, Space and Mission have also been searched in recent weeks.
A spokeswoman for West Yorkshire Police said there had been 30 arrests in total since the raids began.
The four people arrested on Sunday were in custody awaiting interview, she added.
Supt Peter Nicholson said information which led to the raid came from concerned members of the public.
He said: “This has been an intense campaign which will have hit the night time economy hard.
“It does not make us popular but that is a risk we have to take in ensuring their safety.
Supt Nicholson warned drug dealers against returning to the venues.
“I would ask them to remember that this is in no way over.” he said.
“Information about suspected drug dealers was passed on without those people knowing and successfully led to the arrest of four people. We can and will do this again.”
