Runescape money making trick has to do with fremnick diary?

My friend wont tell me the whole trick. he said to complete a fremnick acheivment diary, go to waterbirth island n something about a bank seer. does anyoone know anything of a trick like this?



Waterbirth island is known for having many snape grass spawns. After full completion of the Fremmenik Diary, you can bank with Peer the Seer. This would allow very fast collection of snape grass, making you money. Not the best moneymaking method but it's okay if you plan on using the snape grass in herblore.