I had help carrying the tank but my dog somehow got through the thing that blocks the hallway, its like a little fence to block babies from a room or hallway. he ran to us because he didn't recognize my friend as part of the family.. and at that moment my friend tilted the tank cause he was scared. then i lost grip of my side and the edge cut my arm and then it fell onto my dog. it was the worse experience of my life and I hope everything turns out ok.