I feed frozen blood worms and brine shrimp to my SA planted tanks, but never to my African tank (male peacock/hap + labs and p. acei.). Just paranoia, I guess. I feed NLS sinking pellets and Omega veggie flakes. The synos get NLS sinking wafers. Everyone likes the food and it's really all they need. My biggest problem, related to food, is not overfeeding the little buggers. A brief battle with bloat a few months ago pretty much cured me of that habit!