i haven't tried this content yet. I read that it is a solo arena. How hard is it on normal? I have multiple classes, i figure i would run it on bow/bow warden. I am at about 360 cp level.
If you are getting blue items, you are running Normal Maelstrom. Normal Difficulty does not drop Maelstrom Weapons. Normal is a great place to learn the mechanics of the arenas and the spawn locations, but the lower damage incoming and low health of the mobs make it considerably easier than Vet difficulty.
You'll need to swap the difficulty over to Veteran in your group menu and run Maelstrom Arena on Veteran Difficulty, where a Maelstrom Weapon will drop 100% of the time after completing the final arena.