If you feel like flow into the breeder box isn't strong enough and you're using an air pump, maybe consider getting a larger pump with adjustable flow. You should be able to pick up a pretty fancy one for about $10. Some even have dual outputs (see Ken's Fish in US or Angel Fins in Canada has some great ones under $20) so you could also keep a tiny sponge filter inside the breeder box for the shrimp to graze on.
Or if you want to really go tech-y, you could use a Hagen Mini Elite internal filter to pump water into the box.
My shy BKK (new addition into my michling breeder box project)
Bought the breeder box to the font of the tank for easy monitoring (still waiting for my microsponge filter)
Now that I moved my breeder box into the front of my tank, I'm thinking about possibly implementing a system where I don't need to replace my active substrate by instead putting active substrate in either a "HOB breeder box or HOB filter" to have it bring my pH down... since there is a lot more back space where the breeder box used to be.
I'd like to avoid resetting my whole tank to replace the substrate. But I would only if my "idea" is just outright stupid and shouldn't be done (feedback here would be nice).
If I were to do a reset once it no longer buffers below 7pH (I'll reset when I starts hovering @ 6.6pH) I will redesign my tank so 1/3rd of it is substrate and the other 2/3rds is bare glass, and have my bees placed in a giant tub with a sponge filter for a week. That way cleaning and replacing substrate will be easier in the future.
I'm hoping my BKK got "busy" with her. Nonetheless, I hope the babies survive and grow up well in my breeder box. Ebay seller had to reship my micro-sponge filter for the breeder box so I'm hoping I can get that up and running for better survival rates. Got some cool (what I think is cool) looking pictures of the berried michling.
and in other news, my idea to use a HOB Breeder Box as an active substrate holder works (: I got my pH down to 5.5 as if the tank was running with new substrate day 1.
and I repositioned my spraybar of my Eheim 2213 for better water agitation:
and lastly, my riccia just looks awesome enveloping my michling breeder box's prefilter sponge:
Next update will probably be when I get my microsponge filter in the mail ~incoming 2.5 weeks and when the babies hatch and are sighted (:
Will get 5 Princess Bees in the future and put them into the melting pot in hopes to breed Princess Bees and possibly have a Paracaridina x Caridina cross that breed and/or look awesome. They do not come cheap in Canada ($10 each), wish they were the price of $0.70 like Vietnam lol ):
Will leave the cull tank to establish for about 1 month.