If you moved the minnows to the 7g that would work and then you could lower their water temp too and maybe get a nice colony going with a species only tank.
And in the 10g by adding 3 more females to the 1 female would work and you may want to bump that number up to make 6 females since it is heavy planted, still need a back up plan...anything can happen with sorority tanks...I would try and get related females to increase your chances......
You would be really pushing the load and could risk aggression issues by adding the 3-female along with the 5 minnows. Depending on the number and type of plants-water quality may or may-not be fine. I would have a back-up plan for either the bettas or minnows and monitor the water quality.
hi oldfishlady i have been cycling my 2.5 gallon tank for about a week and from what i can see the filter sponges are full of dirt and stuff my halfmoon betta is coming tommorow will it be ok to add it to the tank?
I don't use OTC medications or antibiotic, but if you opt for antibiotic look for something that covers both gram negative and gram positive.
I use aquarium salt 1tsp/gal along with 100% daily water changes for 10 days with good success with treating fin issues.
You may want to start a new thread asking about the Mardels's Maracyn-I am sure someone could help you with its uses.