Why do you wish to avoid dosing? Eventually, all tanks benefit from some dosing or you just end up spending massive amounts of money on water changes when you could just pour a bit of a liquid in. You can also run into the issue o bottoming out nitrogen and phosphate because you have to keep doing big water changes to replenish elements when those two are lacking. Dosing is extremely easy. I dose a 100ml a day of all for reef and I am done. Keep in mind too that water changes are often stressful for the inhabitants so if you have to constantly do large water changes then you would be constantly stressing out the inhabitants. I am not arguing against water changes but that they are impractical when a tanks element consumption beings to elevate (be that from corals, coralline, macroalgae, etc.).