That food is not going to cause bloat so something else is.
It could be organ failure caused by chemicals or something toxic in the water, or TB, which causes internal organ failure but that is unlikely due to the number of fish you have lost recently. TB tends to kill one fish every now and then, not a lot in a couple of weeks.
Have you managed to get your well water tested by a water testing company yet?
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If the tanks are established and have established filters, and you are feeding adult fish, feed them once a day.
If the tanks don't have established filters, then only feed 2-3 times a week.
If you are feeding baby fish, feed them 3-5 times a day.
If you are feeding adult fish and preparing them for breeding, feed them 3-5 times per day for 2-4 weeks before breeding them.
It could be organ failure caused by chemicals or something toxic in the water, or TB, which causes internal organ failure but that is unlikely due to the number of fish you have lost recently. TB tends to kill one fish every now and then, not a lot in a couple of weeks.
Have you managed to get your well water tested by a water testing company yet?
------------------
If the tanks are established and have established filters, and you are feeding adult fish, feed them once a day.
If the tanks don't have established filters, then only feed 2-3 times a week.
If you are feeding baby fish, feed them 3-5 times a day.
If you are feeding adult fish and preparing them for breeding, feed them 3-5 times per day for 2-4 weeks before breeding them.