Feeding frozen, (formerly) live food

Haro!

I have some frozen cubes of bloodworm and daphnia. I want to give my sick tetras a bit of a boost, the barbs have been getting the lionfish's share of the food so far.

Specifically, I want to give the daphnia but I have no idea how much of each of these cubes to feed 10 smallish cardinals, and I also don't want it to settle around the tank to eventually turn my test tubes green, so it must kinda stay in one place where the tetras can get to it. Banana for scale.

I was thinking of rigging up some sort of basket, either floating or held in place with a sucker. I have an assortment of tiny filter cones and cubbies, some with 0.023 cubic centimeters of worthless carbon that came with the dinky corner bubblers. Also the little baskets plants come in.

Any tips would be much appreciated! Thank you!

 

My vote would be to shave off a tiny corner with a knife. And drop that in there, start with a smaller amount than you think.

Can adjust the amount depending on how much they're getting through.

I used to feed copepods to my CPDs and that stuff was like snow in the tank if you OD'd

 

you get feeding cones at most pet shops:

 

Do they work for dead stuff though?

 

yes, the fish peck and suck the food through the holes, live, frozen regardless..