I don't know much about 46's but I would suggest removing the tank and cleaning it and all the lines properly. It's no fun and not sexy but you will avoid a lot of problems in the long run. Also gives you a chance to inspect the tank for weak spots. When it starts bouncing around all kinks of stuff breaks loose and destroys your filter and maybe your pump. I found a silver dollar size chunk of solder in mine from when they soldered it together