Nice finds! Just be on the lookout where ever you go for the 65k ones. they sell them in grocery stores...ect. don't worry about the space blankets. I tend to not like them because they cause "hot spots" due to them being folded up. Use some flat white paint. The commercial ceiling type. It stays cooler and reflects a lot of light. Better for that small space. Just take the plants out since their still in veg and place them in a window or somewhere with light. they dont need a ton right now. Next, paint the inside of the tub white (sand it down first to rough up the surface with a VERY light sand paper. Polishing sand paper will do.) Let dry overnight.