I got my betta more than 3 weeks ago, and here are the stats:
10 gallon tank
50% water changes every other day
100% every week or so
water conditioner used in proper amount
given blood worms
when he first got into the 10 gallon tank, no matter what i did, he would glass surf all day long (even frantically sometimes). he then made a bubble nest and seemed fine. but now there is a clear slimy coating on everything in the tank, you cant even see it, and he seems VERY lethargic. the temp of the tank is fine and i just did a full water change 4 days ago and a 50% change yesterday. someone please tell me what is going on! Thank you much in advance.