How many / what size / tank size?
They will acclimate, any move or change in tank decor can take some time.
Bubbles on the surface can be from a few things, but typically not an issue. Did you use the cycled media from the old filter? Do you have a water softener in your house / tap that you are using for water changes?? My advice would be more surface agitation, through another filter like you have (will need to upgrade soon anyways) and / or a powerhead or two. In my tanks I am for 10x filtration turnover (1200 gph in a 120 gal tank) and another 10-12 of pumps or powerheads.
As for the heater, get an adjustable one that you can leave in the tank set at the right temp. Also look into a cheap digital thermometer as the stickers are rarely accurate.
The decor is up to you, but I have found they create territories and more attacks and aggression. In a smaller tank (55-90 gal) you will be best off with NO plants or decorations.
They will acclimate, any move or change in tank decor can take some time.
Bubbles on the surface can be from a few things, but typically not an issue. Did you use the cycled media from the old filter? Do you have a water softener in your house / tap that you are using for water changes?? My advice would be more surface agitation, through another filter like you have (will need to upgrade soon anyways) and / or a powerhead or two. In my tanks I am for 10x filtration turnover (1200 gph in a 120 gal tank) and another 10-12 of pumps or powerheads.
As for the heater, get an adjustable one that you can leave in the tank set at the right temp. Also look into a cheap digital thermometer as the stickers are rarely accurate.
The decor is up to you, but I have found they create territories and more attacks and aggression. In a smaller tank (55-90 gal) you will be best off with NO plants or decorations.