You must have Surf to get in Sootopolis Gym. It's between the Pokemart and Pokemon Center. When you got in, you'll see there are floors and stairs. But you can climb up the stairs right now. Go to the first floor and step on the floor tiles, they will "crack". If you step on the cracked floor tiles, you'll fall down to the lower floor. That's the floor were the trainers are >.< . So if you fall down, go down to the lasted one and clmib up on the stairs to try a gain. Now what you have to do is crack all the floor tiles and make sure the last floor tiles you crack is the one at the stairs, and Voilaa! the stairs can climb up now. And so on the second floor... Use the grass-type Pokemon to beat the gym leader easier... Hope the help you. I was stuck at this one, too >.<. I got the hint from the trainers at the first floor after i beated them >.<. And sorry for the grammar and mistake, I bad at English :(
I get my 8th badge in Sootopolis gym.
hes in sootopolis city gym
Sootopolis City. The gym leader is Juan.
He is at Sootopolis city...you can battle him only after the sootopolis incident
Go to Sootopolis.
Sootopolis City
sootopolis city
Sootopolis City (to get there you need the HM Dive).
The 8th Gym Leader in Pokémon Sapphire can be found in Sootopolis City.
In Sootopolis City.Trainers and Gym Leader uses Water-Type Pokemon.
When you go to Sootopolis, to fight the 8th gym, you can't. There is a cave behind it, when you have to fight Groudon.
they will be in sootopolis city and will be blocking the way to the 8th gym