I don't <"normally comment"> on these sorts of threads, but that is some fantastic rock.Geo stones
I agree. For a planted tank, reasonably stocked with some sensible maintenance applied to it, additives and special filter materials are grossly unnecessary - a good sponge for mechanical filtration is all you need - keeps flow up as well. What filter @CooKieS are you using?. Love the rocks btw!25€ filter and without Purigen or any other useless additives.