ai hydra 26hd

I can not get my Hydra 26 HD out of store demo. Tried multiple times to reset it by holding down the indicator led for 10 seconds, nothing happened.

Hey guys, (New here) I'm in need of a little help. I have a 220G -- 72 x 24 x 30" tank that has a black plastic rim at the top. I was going to go with a single-arm kit, until I realize that it wasn't compatible. Hanging the light's isn't going to work,.. so I was wondering- What would a good...