Feeder Fish Treatment

[Mentat]

... I was hoping to maybe use some sort of prolonged treatment before actually using them as feeders to destroy disease and parasites. Any Ideas...

Hello and welcome to FF! Myself would start with a healthy stock (not from a feeder tank and with no visible diseases in shop tank). Guppies are small prolific breeders, mollies grow much bigger; but sometimes can be finicky, and Platies are in the middle of those two IRT size. As Ryan stated, for fish treats, using a 10G will suffice. However; if needing a large number of fish, recommend either a 20L or even a 30/40 breeder tank. The 20L & 40's are available in the quarterly Petco $1 a gallon sale. Keep a bare bottom, a hang on back power filter (like Hagen's Aqua Clear for their simplicity and no cartridges) and you are set.

Plastic bushy plants can help fry survive being eaten by adults. Or you could divide that tank in two, one side for feeders/adults, and the other side for raising fry, with the ready to give birth females in livebearers plastic traps.

IRT treatments, you could get your fish and let them acclimate for a few days; then treat them daily for a week with Melafix. On day 7; do a 25% water change and treat tank with a parasite med that will kill flukes. Repeat the parasite treatment weekly after water change for total of 4 weeks and you are done. Missing a treatment will ruin everything and will have to start 4 treatment schedule again. Once done; run carbon on filter for 48 hours and discard it. The meds will be gone and you can start raising healthy fish in it.

As long as you do not introduce new fish stock and take care of the water with 20-25% weekly water changes, all should be OK. Good luck !