Cycling and Bio-Filter in Planted Tank

Dick wrote,
I pulled my 4
bio wheels as they were not turning without constant cleaning of the
filters.

Ever check your DOC levels?

.........pull
a cartridge and substitute a clean one. I have never lost my
bacteria. All 5 of my tanks are planted with dense fish populations,
that is more than 1 inch per gallon.

It only takes one sq. meter of surface area with a bio-film to
metabolise nearly one gram of ammonia per day. Filters should remove
*all* three forms of pollution; dissolved compounds such as ammonia,
inorganic pollutants such as phosphate and DOCs, and solid particulate
waste. By removing all the filtering media at once and replacing it
with new, you *are* loosing all the bacteria within your filter. Your
filter becomes nothing but a machanical filter, removing some of the
solid particulate waste, like a pre-filter. If the cartridge, now your
pre-filter isn't cleaned or replaced at least weekly, the solid waste
decomposes within the media and is pumped back into your tank as
dissolved pollutants.DOCs start to turn the water yellow over time and
the water quality drops, unless you do a *lot* of water changing. Mean
while, the heterotroph bacteria that should be in the filter, is now in
your tank at high levels, along with ectoparasites such as flukes and
protozoa which thrive in high organic loaded water. High organics also
stress the fishs immune system and robs the oxygen from the water.

Just my opinion................... Frank