yeah, just to set things straight,
i have no issue with someone like krish who has a magnum canister and employs it only for cleaning, instead of constant in line use.
as don mentioned, it's only the (lack of)denitrification i have issues with.
and the fact that people are lazy and never do the amount of maintenance they should...who is going to clean their canister filter every week?? very few people... same deal with U.G. filters...did they work?? well mostly...lol, but who is going to pull everything out of the aquarium and clean under the filter plates every 6-9 months?? yeah, maybe reverse flow them for a little longer use, but they will still wind-up impacted with goo and start to fail.
people, if you want a simple, hassel free method to attemp, then try the old school lee eng method with only live rock, live sand, flow, and light.
IMO, that would be vastly more stable then attempting to use a cannister filter. but there's alot more WC's involved, i can tell you that.
and you have to get the ratios of live rock and flow right for denitrification to be at it's best.
and you might as well pack it with macro algae too, as i think lee eng did as well.
natural, simple, but more work...these days, probably not a bad thing for a noob to go though...