This is the first time that the lights have been on, so they need some time to adjust. During their time in the smaller tank, they live in natural sun light; the tank was situated right next to the window where the beam of light can pentrate through the window (blinds). Their colours are much sharper and are all natural. They have not been fed any colour food. My feeding regime is 5 times a day, the following time that they are being fed are at: 7 AM, 11 AM, 3 PM, 7 PM and 11 PM. Water changes are done 1 hour after each feeding, or whenever they finish their meal. Each water changes are done in 20-40%, thus equating to a total of 100-200% water change. Juvenile discus require ammonia, and nitrite free water in order to grow large and healthy. A vast array of diet is also the key to success! These juveniles are still being raised in a bare bottom tank, fed 5 times a day with various food, including my own Beefheart mix, Marine Formula One flake food, Hikari Tropical Discus Bio-Gold pellet food, and Australian Freeze Dried Blackworms. I have been looking for some other food like, Ocean Nutrition Prime Reef, but everywhere is sold out. It is important to feed juvenile discus fish with high protein food whilst they are still young, this ensure rapid growth before they start to slow down when they reach 10months old. The dimensions of the new tank is 42"L x 12"W x 16.5"H (water level is set to that high). The formula to calculate the gallons within a cube/rectangle tank is (LxWxH") = XXX / 277 [UK] OR 231 [US]. Hence, the gallons relates to 30 UK (Imperial) Gallons, OR 36 US Gallons. The tank get wiped down twice a week to reduce a build up of 'slime' and risk of bacteria proliferation. The temperature of the water I raise them at is 27-29C, the temperature have been lowered to test some changes in appetite. It seems like a higher temperature do encourages feeding. Water parameter tested using an API test kit. PH: 7.6 Ammonia: 0 PPM Nitrite: 0 PPM Nitrate: 0-1 Tiger Turquoise 5 months old, 142 days old as at 21.07.10 DOB = March 1st 2010 Red Turquoise 4 months old, 111 days old as at 21.07.10 DOB = April 1st 2010 It has now been 35 days since these 4 Red turquoise and 1 Tiger turquoise are in my possession.