Certus Quartz Seeds are removed in the modpack, so Crystal Growth Accelerators have no benefit, like the quest for 4 of them.

certus quartz seeds are removed in AE2 for 1.19 +

the new budding system uses crystal growth accelerators for the budding blocks

Ah Thank you, my fault. I think it would be Great if either the procurement of certus quartz is explained in the quest book, or JEI contains the specific recipes.

I second this, there doesn't exist any information I can find in game directing you how to use the growth accelerators and anything online refers to the removed seeds.

No better source than the official documention from the AE2 creators: https://appliedenergistics.org