What about poo? Ammonia/Nitrite/Nitrate aside, what breaks down and devours
the sludge component?


"WD" wrote in message
news:KB1ra.375801$OV.400164@rwcrnsc54...

With what I've learned recently, in a well-planted tank, you don't need to
do water changes at all, in theory. Therory being you've created an
ecosystem. Fish create waste, filter converts waste to nitrogen, plants
convert nitrogen to O2!