I have never found a better, more economical filtration system then the sumps I've made myself out of old tanks. HOB's and cannisters never seem to be enough and always require short interval maintenance, more than I'd like to do. Parts for a DIY sump or wet dry filter are always easily available at your local hardware store or online.
But I do supplement with cannisters and HOB's and sponge filters. That way maintenance can be done with limited disturbance to the tank.
And the plant I hear to use is Pothos. I've still yet to try integration into my aquariums, but I will someday.
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