How long

No such thing as too many silk plants...and how long has your tank been up and running for....also what other fish do you have in there?
 
You might want to post this in the cichlids forum. Angels will eat smaller tetras. I had a disastrous introduction of some cardinals into a tank that had two keyhole cichlids, and keyholes are supposed to be "friendlier" than the average cichlid. So, I would think twice before adding angels to a tank with tetras...

Val
 
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