I'm not even going to try to quote... ;-) I've tried to give you
directions but they're spread out and buried in different threads.

First, you're changing water in all your tanks. This is the most
important thing. It will keep the baby guppies alive and heal the
bettas. Once you've done a week of 50% changes and all the fish seem
OK, go to 50% twice a week for the babies and 50% a week for the adults.
You can go to 50% a week on the babies too after the first six weeks
when you slow down on the food.

Salt and guppies. Put 1 tsp/gallon in the guppy water for both babies
and adults (dissolve it first and pour it in over a couple hours). When
you change water, put 1 tsp/gallon in the replacement water. When you
add water to replace evaporated water, do not add salt. Your guppies
will always be happy with some salt in the water.

Salt and bettas. Bettas do not like salt. Only use salt for bettas if
they are sick AND you are using no other medicines.

Bettas and ich. Use your Rid-Ich+. While you see spots, add a fresh
dose every day after a 50% water change. Once the spots are gone, treat
the next day, and then start treating every third day for two weeks
(this is different than the label says but has worked really well for
me). It keeps the ich from coming back. Do NOT use salt while you are
using Rid-Ich+ on any soft water fish like bettas.

As long as you are doing the 50% water changes between doses and using
no other treatments, you will not hurt the bettas with Rid-Ich+. It
should only take 3-4 days for spots to disappear at 80F.

Fin damage. Change water daily until the fins start to heal. The fin
margins will start looking smoother and then begin to grow. The
Rid-Ich+ you're already using will help them avoid finrot and fungus.
50% a day is fine. Once the fins look better, go to changing 50% every
third day (before the Rid-Ich+ doses will be easy). Finally, level off
at 50% a week when the fins are growing well.

I hope this is clear and that you don't lose any more fish!

--
Put the word aquaria in the subject to reply.
Did you read the FAQ? http://faq.thekrib.com