Nice Tank fplata, I love the whole rimless look. One day...
I was only asking because before I put dirt in my tank I only had gravel with no real plants. I would be limited on the amount of time I can gravel vac for because I didn't want to change out too much water at once. I've also never had a planted tank till a few weeks ago, so I'm new to the game. didn't realize most people didn't vacuum out there gravel.
I still think it could be beneficial to have though, because there might be cases when you could use it.
flight50 - Ya, I think skimming the surface could be one of the benefits, just to pick up loose stuff along the bottom. The reason why I was asking about having the water be pumped back into the tank is so that you can clean for as long as you want without having to stop.
Thanks for the input though.