I have a heavily planted tank, it looks great, everything is where I want it. I want to do a gravel vac but I am worried that I won't do an effective job without tearing down the tank. What do you think?
As far as I know, normally the issues with gravel vacuuming are aesthetics of the tank, and the buildup of nitrogen compounds, primarily ammonia and/or nitrate.
As the plants will happily use the Nitrogen, especially if they're root feeders, then you're left with the question of seeing fish poop.
And I certainly don't profess to be an expert.. really..
All I do is pull the excessive amounts of pleco poop out, and do water changes. The plants will feed on the excess nitrogen. Don't tear the tank down, as that will disrupt the roots of all of you plants.