Day 4: Oops, and the more you learn the less you know

Another trip out to the local hardware store to replace my original type of silicone for one made specifically for aquariums – apparently, the regular stuff would not have stuck to the PVC material I am using since it contains oil. You learn something new every day.

On the upside. I found a real cool termometer/hygrometer to use for the build so that made it all worthwhile.