Try going somewhere else or talking to someone. If you are in Snowpoint city beat the gym leader Candice first, if not, then be more specific in your question please.
Cyrus the galactic leader
Team Galactic will block the lake untill you defeat gym leader candice; she's in snowpoint city. Just go past into the city, rest your pokemon and take your gym challenge. When you won go back and lake acuity should be free to enter
well go to the elitte four- i don't understand your question is it " what do i do after i defeat the 8th gymleader in Pokemon pearl?"
In Pokemon Pearl version you fight the gym leader Norman. Pearl version is apparently not a legitimate version of the game and you will not be able to get into his gym due to a bug.
Candice is the 7th/snowpoint city gym leader.
she has abomasnow, sneasel, snover andGOD KNOWS!
In Pokemon pearl/platinum/diamond Candice is the 7th/snowpoint city gym leader.
The seventh gym leader is Candice, the Ice Type leader. She is at Snowpoint City.
Candice
By beating the gym leader
Snowpoint city at the top of shinno Pokemon daimond & Pearl
what do you do after beating the fouth gym in pokemon pearl
Candice in Snowpoint City
with fire type and flying type pokemon. work best for beating grass type .
In Pokemon Diamond and Pearl the Gym Leader Candice has; Snover, Sneasel, Medicham and Abomasnow. In Pokemon Platinum her team is mostly different instead having; Sneasel, Piloswine, Abomasnow and Froslass. She can be rematched in Pokemon Platinum with an updated team which is; Weavile, Mamoswine, Abomasnow, Froslass and Glaceon.
You can get the HM waterfall in Pokemon Diamond and Pearl by beating the 8th gym leader and talking to Jasmin by the little beach. She will give it to you.