Pics in my new journal...
Good news: It's all siliconed
Bad news: No longer a separate heater section. Will try to fit one in the return section.
And after unscrewing the nozzle of the pump, the pump output is still about 1/16th of an inch too long to back all the way out of the hole. So the pump can't be removed! Not without force or a little surgery anyway. Idiots. Also not sure what to do with it. The nozzle is barbed on the end, but it didn't come with any thing else. I guess I could hook a hose to it if I wanted to, to direct flow. Seems kinda weird. No instructions or paperwork of any kind came with the tank. Also pretty weird imho.