Odd Betta behavior
This is my first betta fish Iíve ever had. Iíve had two 55g tanks, one salt and one fresh, a 20g fresh, and a 10g fresh, but the fresh were tropical and semi aggressive tanks. ANYWAYS, Iíve had my betta in a half gallon for about a month and a half (I know, not big enough) so I decided to get him the fluval retreat 5g tank with the integrated filter. In the half gallon he was happy, constantly swimming around, flaring up all the time, ate like a champ, and always got excited when I walked in the room. Well I set up the 5g, got the filter running, added the water conditioner, let the water cool off and let everything settle for about 3 hours. I added him to the tank and at first he was curious, constantly swimming, exploring the tank, and I even put a few betta pellets in since I hadnít fed him yet, and he went right after them. I could tell the current was a little strong for him, so I tried to angle it up to the surface as much as possible until I found a solution to reduce the flow. Checked on him a few hours later and he was farting around and hiding in the corners. Not flaring up when he saw me like he usually did. This morning I turned on the light to check on him and he was just sitting at the bottom under a bridge I have in the tank. He didnít flat up or move at all. This behavior is not like himself at all. I turned the filter off before I left for work. What should my approach be when I get home and he still isnít active even after the filter has been disconnected? Also, if anyone knows, how do I turn down the flow on the filter? I read that you can do it, but when I removed the pump this morning I saw no dials on the pump to reduce the filter flow.
Thanks in advance!