So I went with 2x 300w jagers. One is already set from my 75 g and the other i sat to the exact same numbers. Ok well at the moment i am keeping my heat at 60 because painters, electricians, and the carpenter have been in and out all day. at moment i have no lids. ok well it gets up to 77, and one heater turns off, my orginal jager, the new one never cuts off and then the other one comes back on. I know that the heat is probably escaping but the new one is at the exact same temp, so I figured it cut off a bit. I feel like I am throwing quarters out the window every minute. I am having trouble fitting a lid for the euro-braced, since the normal black newer tanks has that small brace that has grooves for the lids to fit in. the euro is just a straight piece of glass