Originally Posted by Otaku521
So you mean removing the bio rings on the bottom would be better? most of my plants are tied on rocks or driftwood... so I think I would be fine for now?
That's up to you. My point it that plants grow well in substrates that are lightly cleaned and allowed to accumulate nutrients in it's lower portions. Serious vacuuming can also harm root systems. Undergravel filters and bio media need to be cleaned well to work well over time.
A better approach is to have the substrate work only for the plants and to have a separate filter for biological and mechanical filtration. Some people use sponge filters, HOBs or canisters. Any of those options are preferable to RFUGFs to most aquarists. That doesn't mean you shouldn't try your idea out. You may like it or you may just need to discover it's flaws out for yourself. That's what I did.