I have a my 20 gallon thats been struggling to keep any nitrates from the plants i have in there. It makes me curious if that could be a reliable system if set up to prolong maintenance since there wouldnt be any waste accumulated? I only have low to medium light with java fern, a few anubias, and a bunch of hornwort (grows insanely so this would be the nitrate sponge), no co2
, and dosing with leafzone and flourish.
I am wondering partly out of curiosity, and also because my girlfriend has a tank here as well but she isnt always on top of weekly water changes without me bugging her lol. So if i could add a bunch of my hornwort trimmings to her 29g and just start dosing her tank with the ferts as well weekly when i do my water changes, perhaps i could reach a level where it keeps waste down to virtually nothing? The tank isnt stocked much at the moment, so we can keep it lower stocked. Is there something im missing that would build up and become toxic to the fish? Id have to top up with water from evaporation, so would the disolved solids build up to bad levels like this? Ive heard of people with planted tanks that go as long as a year of more without a water change, but i wasnt sure if that was a high light tank or otherwise more than our basic inert substrate and stock t8 lighting. Not looking for going years between changes, but even a few weeks or months would be nice and im sure the fish would like the waste staying so low. She'd still have to rinse the filter occasionally anyways, of course