I'm currently building a slate hide for my Herman's and I was wondering if using hot glue sticks are going to be harmful to him once the glue is set. I already have some aquarium sealant but it doesn't seem to be doing the job. I'm using these sealant https://www.amazon.co.uk/gp/product/B00175F4ZS/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1