You are going to love this brine shrimp hatchery. I’m not exactly sure about the weight with water, but I can hold it with one hand. 3.5 lbs is my guess.
I built the stand from 1” PVC that Cory demonstrated in a YouTube video. The handle rests very snug at 1” So I would keep the wood you use to hang it on at 1” The USB nano pump is perfect for this application.
The heater I use is a submersible nano heater. Just make sure you rinse everything throughly after each hatch.
My fishies get a gourmet dinner every night, since I’ve had mine.
Enjoy!