I don't spot feed it, occasionally it grabs some food from the water when I feed my fish and it seems to be eating my shrimp molts for some reason (not sure if that is good but it happens). It gets most of its "food" from my lighting. It had 3 heads when I bought it and now each has split so I have 6 now. That's why I would say the only care I would recommend is finding the right flow since that's all I did.
I do add fuel to my tank occasionally.