I have used bio bale first and then moved to bio balls starting in 1991. I have never had a tank crash, and my best test tank for this test was a 200 gallon oceanic that ran from 1999 to 2009. Before I swapped everything to a 300DD the Nitrates were at 2ppm and this tank was well stocked with fish and coral. I never touched or washed the bio balls. I like the trickle filtration system for the added oxygen I feel it gives my aquariums stability, as compared to other types of sumps like on my wife's tank with filter socks. I change out the blue filter pad regularly, which to me is easier than washing filter socks. I guess it is part of getting old and not wanting to change, but if the sytem works don't break it. And yes I still use my Urchin Skimmer Pro that is 14 years young on my 180. If you do several searches here on RC on individuals who complained about high nitrates and every word of advise that came in told them to change out there nitrate factories of bio balls to something else, but in most cases it did not fix the issue, because maintenance is key. Find a system that works for you, and don't change it every time something new comes out