Because I keep (and have mainly kept) cichlids, this is why I dedicate planted sumps, so they don't turn into salad bars
One of my favorite nitrate users is Papyrus (umbrella palm) but the root ball gets so big, so fast, it can use up almost the entire spaceal area of a 6 ft tank.
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I switched from Papyrus to mangrove trees a few years ago, because although their roots will eventually out grow my 125 gl sump, they grow quite slowly
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I planted the above mangrove pod in a sand filled bamboo stem in Sept of 2021
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The mangrove roots split the bamboo tube by Aug of 2023 (above)
Today some saplings are about 3 feet above the surface.
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I also like quick growing Vallisneria as a true aquatic plant for using lots of nitrate n the sump
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and Salvinia and water lettuce are known to be a big nutrient consumers, when used as floaters.
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And of course terrestrials like Dieffenbachia, Monstera, and Pothos
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