I say pass on the sand with the bottom drains, even at 6", once the wolf uses all the power, sand will be everywhere, including inside the ultima. I think you will need to give up some looks here and there to have both with less maintenance as possible. I'd go with option 3 if money isn't an issue since you want it to be a show tank, you can make a show tank with HMF, or you can pass on that and only use the Ultima but not on the floor, I would saw hide it within the background so all filtration is hidden, heaters behind the background as well.
I am also worried about the wolf tossing up sand. There is another member on here that runs a ultima 1000 with sand and has not had problems. They have a fly river turtle that stirs up the sand. That should make me feel more comfortable but I have seen some crazy aimara feeding videos and know there will be some sand clouds.


