I know most people prefer using Pothos these days, but I have found the lowly dieffebachia to be very effective at filtering out nitrates, and it is widely available in garden and plant shops..
I have it growing bare root, in both my125 gallon sump, and atop my cichlid tank, and along with the submerged Vallineria, and Mangroves,.
my nitrate numbers have been negligiable, even though I consider th ecichlid tank, over crowded.
The plants do take up some space, and at times I need to chop off roots from taking over.
Some of the braches can get as thick as my by arm
I have it growing bare root, in both my125 gallon sump, and atop my cichlid tank, and along with the submerged Vallineria, and Mangroves,.
my nitrate numbers have been negligiable, even though I consider th ecichlid tank, over crowded.
The plants do take up some space, and at times I need to chop off roots from taking over.
Some of the braches can get as thick as my by arm