I love seeing very heavy planted tanks but it is always puzzling to me how do these guys manage to keep them clean. Generally I like to do light gravel vacuuming on weekly basis, and once in a while I end up flipping everything over and cleaning absolutely everything. It seems that cleaning would be impossible without damaging the plants, root structure, and especially substrate layers.
How do they do it!?
How do they do it!?
and not one fish had died and the water tests are all fine.