I will be upgrading my 55 gallon tank to either a 75 or 90 gallon tank, not sure which yet. I will be buying it in bits and pieces as I dont want to buy used stuff this time... I want to get my dream system. Anyway, my question is this... I get my water straight from the ocean. Will I still have a cycle if I take sand and rock and water from my current tank and then just add more seawater? If I do will it be a full on cycle or will it just take a week or two to settle down? I really want my tank set up by November so I will be able to get an octo from Tom but I dont want to rush the set up. I'm just looking for info on others experience with transfers like this.