I simply have a big tank. Nico (the mega tank owner) thinks the reason why his rays are breeding so well is because of the volume of water is so great. For instance Leos take like 5-6 years to breed Nico breeds his in 3. So i'm going with that theory and a very good quantity and quality of food.
Alex
IM USUALLY AT ATLEAST 85/86 MYSELF........, BUT DURING THE SUMMER IT DOES GET UP TO WHERE NIC'S DOES......, REGULARLY......... HIGHER IS BETTER IN MY OPINION...... BUT FOOD WILL GO QUICK...., WHICH IS A GOOD THING..... -NICE HEALTHY FAT RAYS-