1L Bottle Holder (Brine Shrimp Hatchery) by Hotrian

Last crawled date: 4 years, 5 months ago

Holds a 1L bottle upside down, primarily for the purposes of a Brine Shrimp Hatchery. Perfect for breeder aquariums and for raising fry. For this purpose you'll also need a "Co2 bottle cap" for 1L/2L bottles - you can get these for <$1/ea. on eBay if you don't mind the wait.
Designed specifically around a 1L Coke bottle, but I suspect most brands should fit fine. The top hole is 90mm so there is a little bit of play allowed. The pegs are 7.75mm wide and the holes for them at 8mm wide. This offered a perfect press fit for me, but I'm actually overextruding a bit right now so I have provided the Fusion 360 file if someone needs it to tighten those tolerances.
For proper assembly, you will need:
Printed parts
(1) 1xMiddle.stl - this is the piece the neck of the bottle rests on
(2) 2xTopBottom.stl - this piece is repurposed as both the top and the bottom
(4) 4xArmLong.stl - these arms go between the top and the middle
(4) 4xArmShort.stl - these arms go between the middle and the bottom

(1) Co2 Bottle Cap for 1L/2L bottles
Airline tubing
(1) Short piece, approx 6" or as desired
(1) Long piece, approx 18" or as desired

(1) Microball valve
TheKingofDIY has a great video on setting up and using your Brine Shrimp Hatchery here.
I intend to attach more pictures of the assembled hatchery later :P.