Hydor THEO (UL) Submersible Aquarium Heater at PETCO
Was thinking of getting the 50W one of those. I just got a betta for Christmas and currently just have him in my old 1.5gallon hex tank but I want to get one of those minibows 2.5 gallon ones while they're on sale(don't really have the room for anything bigger right now) He seems pretty happy for the time being, but I've got no filter or heater, just a light. Was wondering if the 50W was too big for either the 1.5 or 2.5 gallon tanks, it says it's rated for 5-15gallons, I was just hoping it could handle the smaller tanks alright and if I eventually get some space to give him a 10gallon I could use the same heater then, since they're the same price.
Also, is that a good brand? I was going to buy a tetra heater in store the other day but ended up not because I remember hearing bad things about tetra stuff. I don't think I saw this brand in the store however but no big issue to order online.