Ok on my next order from Dr's I'm planning on getting a new heater Eheim Jager to be exact, the one thing I've notice though they usually have a range of heaters for the same price given probably they cost the same to produce. Well my question is can I and should I buy the top level heater for the price range? Even though I only need the bottom? My reasoning for this is being able to use this same heater in a bigger tank later down the line.
Now I have a 36 gallon tank and according to the little blurb on the product page it says I would need the 100 watt heater (up to 39 gallons) I was planning on buying the 125 heater anyways (up to 52 gallons) but heck why not go ahead and get the 150 heater (up to 79 gallons) for the same price so if I get a 55 gallon some day I already have a heater for it.
Now I get the danger of too much heat to quickly like I'd be a moron to throw that 79 gallon heater in a 5 gallon tank but given the range of difference shouldn't I still be ok with the 125 or 150?
Also I can hardly believe the range of difference in wattage to gallon between heaters, heck the kit that came with my 36g tank had a 200 watt heater in it and here on the product page they say with this heater I will only need 100 watts..... even just comparing the heaters on the site you can see a huge difference in wattage per gallons in each brand. Its just kind of hard to believe there is that big of a difference between one metal coil heater and the next.