go to route 212 at the south part of 212 use your pokeradar (need the national dex) and there is 20% that it will apear hope this helped!
you have to go to route 212 and then use your pokerader
ether you need pokeradar or a mass out break.
Route 212 with the poke Radar
In the Platinum it is 44, but I am not sure about Heartgold and Soulsilver.
Grimer evolves into Muk at level 38.
grimer is in route 212
For Grimer to evolve, get him to level 38.
Grimer does not have a pre-evolution. The Pokemon before Grimer in the PokeDex is Dewgong, evolution of Seel.
When Grimer reaches level 38, it evolves into a Muk.
Yes, Grimer evolves into Muk at level 38.
you talk to the guy and then you catch a grimer and show it to him
go into the big patch of grass on route 212 right befor you walk into the black stuff in that grass use pokeradar and there should be grimmer