Angel fry keep dying

I can't get angel fry to survive no matter what I do sigh, I tried tap water, rain water, a mixture of the 2, but after a couple days all the fry just die, even though they were eating good the day before but when I look next morning all are dead. I also tried brine shrimp, infusoria and microworms as first foods with different batches ( 1 set on brine another set on infusoria etc)of fry a d still all died. All also tried changing the water everyday or every other day with same results. Don't know what I'm doing wrong, also tried raising fry in 1 gallon jar, in a 12 inch x 12 inch x 12 inch tank and also in a 24x12x12 inch tank. I fed twice a day with water changes in the evening after the last feeding.

 

Got a sponge filter or at least an airstone with them?

 

Got a sponge filter or at least an airstone with them?

Air stone in the jar sponge filter in the tanks

 

Air stone in the jar sponge filter in the tanks

Figured as much. Thats where my ideas end, sadly.

 

Figured as much. Thats where my ideas end, sadly.

Ok np I'm at a lost also, I'll probably just get into only cichlid africans to be precise, they live and breed well by me, some albino and blue dolphins also

 

Ok np I'm at a lost also, I'll probably just get into only cichlid africans to be precise, they live and breed well by me, some albino and blue dolphins also

Yeah, if you are into breeding, sometimes best to stick with what works for you. Of course, i try to keep the hobby as stress-free for myself as possible, so of course i would think that way!