08-19-2012, 05:22 AM
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I never blanched it. I fed lots of romaine to my Herichthys Pearsii, Heros Severus and Uaru cichlids, but all I ever did was thoroughly wash it and remove the "ribs" which never got eaten any way.
I don't think it provides very much nutritionally, but for some fish that eat a substantial amount of plant matter, I think it is good for their digestive health, the way fiber works for us. The pearsiis and severums were especially appreciative of it, although it results in a decidedly messier tank and necessitated positively huge water changes. Nevermind that, the Pearsii's developed beautifully, and the Uarus and Severums spawned. Since I don't know what fish you're feeding, I am not sure whether I have been any help, or if my experiences can be applied to your situation. . .anyway, good luck. It is great fun watching them tear into the stuff!