If you tape around the tank you will have to remove it before the silicone starts to cure, if the silicone starts to go hard before you remove the tape it will damage the seals when you do remove it.
When you want to turn the tank over use some duct tape for extra support if you feel it needs it and the more people you have to help to turn it over the better.
When you want to turn the tank over use some duct tape for extra support if you feel it needs it and the more people you have to help to turn it over the better.