I bought the single lights that were blue that is true but you have to buy a hub for each tank unless they sit within 3 feet of each other and then they can share a hub for up to 3 lights. You cannot use the lights without a hub as the hub is what plugs into the wall socket and the light plugs into the hub. You can use any of the light colors in the hub and the hub will either be free standing of has a suction cup to attach to the side of a tank. I really like mine for the 12 gallon tank but the bettas wake up when I turn it off if I have the hub on the side of the tank so I have to leave it free standing. (it makes quite a click when you turn it off)
Here is one that does not need a hub and would be a little less expensive if that would help
Yes unfortunately I bought it and not the hub. So now I have it but it does not work until I buy the hub. My mom might take me back up again this week as the BNplecos were in quarntine and if not I can get it on presidents day. On yours it seemed a bit bright and I was wondering if three on a 29 gallon would be good as I don't want it very bright?
thanks for the info, I'm just going to stick with the ones that you have, already have one.
I have 3 in the 12 gallon and I had enhanced the picture a bit to brighten it so the picture showed the tanks contents. It is just a nice nightlight type of brightness in actuality. The 5 gallon tanks have one in them and are just about right for the size of them and could possibly be okay for up to say a 6 or 7 gallon with one. You can try one and this is the nice thing about these... you can add them one at a time up to three in one hub and you have a chance to try them out before adding to them.
Yes I think I"m just going to buy an adapter for just one and try it out, if I like it then I'll buy a hub and three more for my 29. this way the inital cost isn't that much and I probably only need one for my 5.5 so then Buying a hub later won't effect anything. Thanks for the input will let you know how things go when I buy a hub or adapter.