The answer to 'aeration not growing' is that there could be several common causes, such as improper aeration technique, soil compaction, or lack of nutrients. Symptoms may include patchy or slow grass growth, thatch buildup, and standing water. Solutions can include adjusting your aeration method, addressing soil compaction, and providing the right fertilizer and amendments.
If the aeration issues persist or you're unsure of the root cause, it's best to consult a professional landscaper. They can assess your lawn, identify the underlying problems, and recommend the appropriate treatments to get your grass growing healthy again.