It typically takes anywhere from one to two weeks for aquarium plants to acclimate. This is because the transition from living in a natural environment, such as a pond or stream, to an aquarium requires some adjustments and time for the plant to become accustomed to its new circumstances. During this process, it’s important that you monitor your tank closely and adjust lighting levels accordingly. Additionally, be sure not to add too many fish at once; instead start with just a few so that the aquarium does not become overly crowded during the acclimation period. It's also essential that you provide adequate nutrients and oxygen throughout this period by using fertilizer tablets and air pumps respectively. Finally, make sure water temperature remains consistent as well since sudden changes can stress out aquatic lifeforms thus delaying their adjustment process even further. With these tips in mind, it should take approximately one or two weeks for your newly acquired plants to fully acclimate!