I have heard of those who are Orthodox and received through Chrismation being baptized afterward because their heterodox baptism was not in the proper form--not triple immersion,and thus the economia of the Chrismation was not correctly applied because it requires both the Trinity and triple immersion. However, I have read of many Orthodox receiving Orthodox baptism without triple immersion, but by pouring or some other method. Do these Orthodox baptisms get corrected later? I know of St. Basil writing that aerobaptisms (in the air because of imminent death or emergency) are corrected later should the baby survive, but do the Fathers say anything about Orthodox baptisms improperly performed and what should be done about them?