@Essjay and
@Retired Viking so you are saying that I can remove my canister filter/bio-media and let the plants do all the work. Makes me kinda of nervous, especially since everything is going stellar with my tank.
You guys have the experience with this, so now I wished I had never spend money on a canister filter in the first place. All I know is what works for me.
Please don't think I am being a smart butt with this but I am a bit shocked over learning this. Yes I know the Walstad Method read all about it, but this is very hard to achieve, and can take a year or years to achieve a complete cycle with the third bacteria that consumes nitrates.
My tank in the picture has only been up and running for six months now. In my case I did not find the plants absorbing all the ammonia, it was off the charts in the beginning due to my aqua soil which as it turns out was an ammonia factory. I had to do daily water changes just to keep the ammonia down to around four ppm. but this was only in the first couple of weeks, due to the fact that I seeded my bio-media in my canister form a previously all ready cycled tank. I really don't believe, in my case anyway, that no matter how many plants, it could have taken care of that much ammonia all on their own. So I feel the canister with the bio-media took most of the load of getting rid of the ammonia.
Bottom line this should be considered on a case by case bases.