Thank you both very much. Water parameters are Salinty 1.022-1.025 Ammonia and Nitrite are 0 with very little Nitrate. I do use Carbon, API brand. Is there a better one you'd recommend? I soak their food in Selcon every other day. Their food consists of Protein enhanced mysis, squid, spectrum pellets, and algae sheets daily. Also, what vitamin supplements do you recommend? Zoe?