[header] How to take care of baby carp [title] Get a 100-gallon tank. [step] You can purchase a fish tank at the pet store or online or you can use an outdoor pond to create your spawning pool. The larger the tank, the more room the carp will have to move around. 
An ideal tank for carp is 8x6 ft (2.43x1.82 m) and at least two feet (60.96 cm) deep. [substeps] Get a tank made of non-toxic materials to promote carp propagation.