While fountain heights are likely controlled by multiple factors such as conduit geometry, lava viscosity and magma supply rate, here we see if magma chemistry could play a role. To determine magma chemistry, we analyze tephra that rapidly cools upon eruption and preserves the pre-eruptive conditions of the magma. The rate of malasada filling (magma coming into Halemaʻumaʻu chamber) affects the intensity of filling blowout (lava fountain heights). Magnesium oxide and fountain heights have started to increase again in episodes 46 through 48. As the eruption continues, we will continue to test the connection between chemistry and fountain heights, providing potential insights for future episodes.