thank u all for info
i have three clown loaches around 10 cm and three blood parrots around 7 Cm and a 25 CM arowana on the top ! it is 180 liters only ..upgrading to 200x60x50cm = 600 liters within a week and working on a wet-dry biological filter now adays and all this group will be moved to the new tank ...and i ll keep my current tank to a single flower horn
and regarding the food i offer them a pellets in one day and a - very small pieces of fat free beef heart - in another