Ato container barb fitting gravity

[Ling_Thing]

I cannot find a barb fitting and nut to cut into my acrylic 5 gallon ato container to use with the float on my reefer 450. Any suggestions?

 

[Reef-junky]

https://aquarium.bulkreefsupply.com/search?w= barb fitting&asug=

 

[Ling_Thing]

https://aquarium.bulkreefsupply.com/search?w= barb fitting&asug=

I searched through all that and couldn’t find one, I find the threaded nipple but no nut and o ring come with them. Think I’m just gonna drill it out thread a nylon fitting in and use silicone and hope it holds

 

[Reef-junky]

You mean the push connect kind? Those aren’t made to be under water though.