Wisteria weed, is a nutrient sponge.
The biofilms that clean fish waist and/or grow on sponge filters will also live on your plants. Add to that any nutrients the plants themselves take in and there is little to no need for filters to remove fish waste.
Having said all that, good water flow is also beneficial and I too recommend some form of a powerhead. You can spend as little or as much as you want on a powerhead these days.
I use a canister filter to help with O2 and nutrient distribution. It also polishes the water. Lately, I have been thinking of using an overflow with a sump to improve O2 levels and help ease water changes for the fish, all the good things about sumps, not found in canister filters.
Unless you are a pretty experienced plant keeper, I'd say regular water changes are the way to go.
I agree. Fertilizer and more frequent water changes are easier for the bigginer. A tip of my hat to lady Walstead and anyone who can setup a Walstead style planted tank.
But even water changes depend on what method you use - Walstead style planted tanks use fewer water changes; EI, weekly; low maintenance planted tanks/modified EI (low CO2 and lighting levels) require fewer water changes or more (as in every other day). It depends on what you are willing to try.
There are several methods for growing aquatic weeds. Pick a method that will work for you, read up on it and once the plants are established then yes, they are a very effective filter. Wisteria weed, is a nutrient sponge. Still, providing a second layer of bio-filtration (like a canister or HOB filter) is more the standard practice.
Yes - angle fish waste will be eaten by plants. Angel fish on the other hand, no way!
Plants eat the fish waste, Angel fish eat the guppies and the guppies eat everything, including the biofilm. :angel2: