Talk:Small hydra lamp

I'm pretty sure the hydra lamp xp formula is incorrect on this wiki. I have 33 Invention, used a Small hydra lamp on Invention and Herblore, and received 8156 invention exp, using approximately 4000 invention bonus xp in the process. I will try to gain further insight on the lamp. Trojan16626 (talk) 18:20, August 18, 2017 (UTC)