Not much. There's spore works or sporology. Just need 1 syringe.
Sorry, like $13.00 a syringe
Add a little weather stripping to where the lid snaps on for a tighter seal. I only used it when I made l.c or noc'd up sub in the jars. It is not big enough for sub transfer to spawning tub. That's where a flow hood really kicks ass.
Oh yeah, try and get the flatest one you can. That way it sits level ish when upside down.