It is okay now except the whole form was wayyyy over to the right.. beautiful fronts and discus and nice pics... awesome tank.. what i use is aquarium salt.. i used to use lake malawi salt but it seemed to clog up filters .. it is mostly the minerals that they need.. such as calcium.. etc.. look up { Lake Tangkanika Info and you will see alot of info on the water perimeters there ..i found this info on the lake.. Lake Tanganyika is a deep lake, with some parts exceeding the depths of 4,820 feet (1470 m). Unlike other lakes of its size, the water of Lake Tanganyika does circulate and a thermocline is not created. This phenomenon gives rise to a theory that Lake Tanganyika could, at its extreme depths, be heated by the earth's core. Even though the lake has a, relatively speaking, uniform temperature, most fish species only inhabit the first 450 feet (137 m) from the water's surface.
The surface temperature of Lake Tanganyika ranges from 73-88°F (23-31°C), although most fish inhabit areas with a temperature from 75-84°F (24-29°C). The water is medium hard with a dH from 7-11, and the pH varies from 7.8 to 8.8.
Lake Tanganyika cichlids have adapted to the ecological niches of the lake in order to survive. Thus cichlids of Lake Tanganyika vary greatly in body shape, unlike the uniform shape of their counterparts in Lake Malawi. Feeding habits of Lake Tanganyika cichlids also differ. An interesting example of a specialization of feeding behavior, is the eating of the scales and fins of other fish.Axelrod 1993). It is almost impossible to simulate these conditions in the home aquarium but an alkaline pH should be maintained by the addition of a coral gravel and Tuffa rock. Some keepers even add marine salt to the aquarium at 4.5g/litre. Anyway the more i seem to look up about the subject the more contradictation i found in the info.. i am going to keep adding a little with each water change as i have.Just don't want to change anything as long as they are doing so well..i could always go for more blue though...