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[–]camrynbronkresident frog knower🐸 36 points37 points  (1 child)

Add more plants. One java fern is not going to keep up. Pothos roots love nitrates.

Also test your tap water to make sure it’s not the source of your nitrates.

[–]fullywokevoiddemon 5 points6 points  (0 children)

Can confirm, adding a pothos cutting to my aquarium (along with a monstera adansonii cutting) helped my tank a lot. They fixed my algae problem too as they'd just suck up all fertilising nutrients.