Originally Posted by Byron
K does specifically mention clay as a good substrate, but I wouldn't set this up for one plant that given it's other needs may not make it.
Substrate fertilizer would suffice in plain sand/gravel. Similar holds for my tiger lotus for example.
I have sechams root tabs and flourish comprehensive. Would those be enough? Have read it needs iron is there enough in those for it I wonder? Though Iam not sure I have the lights it requires anyways.