Hey all. I am a novice fish keeper who recently started keeping a 15 gal. I cycled the aquarium for 2 days with culture starter, i used well water which in my country does not have chlorine. Anyways, I got 6 platies 2 days ago. One seemed sick and died today. I heard that it is normal whenever you get a few fish and put them in a new tank for them to die. Is this true? The rest are moving out and about exploring the tank while that one just stayed still and did nothing. My main question today, is it normal for platies to pick at the ground? I think im over thinking because i get nervous no matter where they are, is it normal for them to pick at the substrate? They weren't doing that yesterday. Is it normal if they occasionally touch the top of the tank(don't think it is lack of aeration, i have 2 air pumps)? Also I have 0 algae growth, is that a bad sign? Thank you in advance.