Absolutely! They made a number of changes to water baptism, check them out below:
Since the Catholic, Orthodox, and Anglican Churches teach that baptism is a sacrament having actual spiritual and salvific effects, certain criteria must be complied with for it to be valid (i.e. to actually have those effects.) These criteria are actually broader than the ordinary practice. Violation of some rules regarding baptism renders the baptism illicit (in violation of the church's laws) but still valid. For example, if a Priest introduces some variation in the authorized rite for the ceremony, the baptism may still be valid (provided certain key criteria are met).
One of the criteria for validity is that the correct form of words be used. Roman Catholics use the form "I baptize you.."; some Eastern Rite Catholic Churches and the Orthodox Churches use the form "Let this servant of Christ be baptized..." or "This person is baptized by my hands...". However, both churches recognize the other's form as valid. The Catholic Church teaches that the use of the verb "baptize" (or "baptize") is essential.
It is also considered essential that the Trinitarian formula is used; thus they do not accept as valid baptisms of non-Trinitarian churches such as Oneness Pentecostals. There was an ancient controversy over baptism using the formula that Oneness Pentecostals use, with some ancient authorities holding it to be valid. Baptising "in the name of the Father, and of the Son, and of the Holy Spirit" is essential for validity.
Invalid forms for baptism include "I baptize thee in the name of the Trinity", "I baptize thee in the name of Jesus", "I baptize thee in the name of the Creator, Redeemer, and Sanctifier", etc. If these forms are used, the Sacrament of Baptism does not take place.
Another condition is that water be used. Some Christian groups historically have rejected the use of water for baptism, for example the Albigensians. These baptisms would not be valid, nor would a baptism in which some other liquid was used.
Another requirement is that the celebrant intends to perform baptism. This requirement entails that the theology of baptism that the baptizer holds be sufficiently similar to that of the Catholic Church, although an exact identity is not required. However, where another denomination has a somewhat different, somewhat similar, theology of baptism, it can be difficult to be sure whether the requirement of intention is met. This is why conditional baptisms are often performed in these cases.
Another requirement is that the water must poured on the skin of the forehead; the water must flow across the skin.
Yet another is that the person must say the words "I baptize thee in the Name of the Father, and of the Son, and of the Holy Ghost" or "I baptize thee in the Name of the Father, and of the Son, and of the Holy Spirit" as he (or she) is pouring the water or immersing the individual. The person saying the words must pour the water. If one person said the words and another poured the water, the "baptism" would be invalid.
Some conditions expressly do not affect validity; for example, whether immersion, infusion or aspersion is used. However, if water is sprinkled, their is a danger that the water may not touch the skin of the unbaptized. If the water does not touch the skin, the "baptism" is invalid.
Water must be poured on the head. If the water is poured over another principle part of the body, such as the chest in the case of an emergency, then the person will be conditionally baptized later.
In many communions it does not affect validity for a single immersion to be performed rather than a triple, but in Orthodoxy this is controversial.
According to the church, the act of baptism imparts an indelible "seal" upon the soul of the baptized.