i lost another heater on my 210gal, looks like the controller on the jbj true temp titanium malfunctioned. its been a bad month for heaters. luckily there were 5 days left on the 1 year warranty so jbjlighting.com is sending a replacement controller. and the local pet store is replacing the marineland heater. cant complain. except maybe about snails. ive got these tiny little buggers everywhere in the discus tank, some kind of mini-snail species that only grows a few millimeters in length. they get in the filter and look terrible in the sand. been battling them for a while and am almost ready to copper the tank.