Stupid, Stupid Me! Now What Do I Do?

The purpose of this thread is
1) to let you guys know what kind of mess I made, and
2) to get some ideas of what would be best to do
 
I have a 10 gallon tank and a 40 gallon long tank! Both planted, one play sand, the other black eco-complete substrate.
 
The 10 gallon was my Betta tank:
1 Betta
7 Kuhli Loaches
about 20 Red Cherry Shrimp 
 
The 40 gallon was what I called my South American Tank:
6 Otocinclus
7 Pygmy Cories
20 Neon Tetras
 
I'd given away my Rummy Nose Tetras to get some Neon Tetras that my husband wanted. After a few months they showed signs of being sick, I lost quite a few of them, they lost their vibrant colours, white patches appeared, their bodies getting funny shapes like there were growths in their tissue. I learned that it may be Neon Tetra disease, so I decided to separate them from the others. I switched them with all the inhabitants of the 10 gallon. I now have 8 neons left in the 10 gallon, but they are not doing so good!
 
Now the 40 gallon looked pretty bare and hubby didn't have to twist my arm much for me to agree to get some new fish. I decided to get some Harlequin Rasboras, these are the fish that I fell in love with at the very beginning when I started the hobby, but the 10 gallon was too small for them. 
 
The problem is, we have a lot of things going on at home, with one adult child having moved back home from University, another moving soon out with his GF and into their own house, lots of extra furniture.....me having an injury...anyways, we plunked the new fish into the 40 gallon without quarantining them (I do have a 5 gallon QT sitting in the tank cabinet) and now I'm in the process of treating the tank for ich using the heat/salt method. (no smiley available that slaps itself on the forehead)
 
Since there are Kuhli Loaches in there I am going with half the recommended salt dosage. Is this the right course of action?
 
And finally, what I am debating with myself is, should I keep the otocinclus and pygmy cories or rehome them? I could offer them to my son who is moving out and will be taking my 10 gallon with him, but he is rather looking forward to getting his own Betta.
 
Can I keep them or is my 40 gallon tank, (48 inches long, has 2 AquaClear 50 filters) over stocked as it is now?
1 Betta
7 Kuhli Loaches
14 Harlequin Rasboras
7 Pygmy Cories
a colonie of Red Cherry Shrimp
 
Looking forward to your answers! Thanks for staying this long to read this!
 
This is the 40 gallon before the addition of the Harlequin Rasboras
 
 
 

That doesn't sound overstocked, but I'm curious as to how the loaches and corys are getting along?

I think this is a decent stock. Does your betta ever eat the shrimp?

Also, I believe you are right to cut the dose for the loaches. Be sure to monitor these fish in particular, though. Hopefully the medicine won't hurt them. Also, be aware that many medications will kill inverts.

Oh, nice, I am glad to hear that my tank is not overstocked like this. I like those catfish quite a bit, even if they don't really belong in a Betta tank! 
 
The kuhlies and the cories are getting along fine, Noahsfish. I haven't noticed any problems between them!
 
Attibones, I was worried about ich meds with the shrimp, that's why I decided to go with the salt-heat method. Going with a reduced dose of salt may mean the salt will have to remain in the tank a little longer but I hoped that this was for all these inhabitants the best method!  
 
The Betta chomped on a few shrimp in the beginning in the 10 gallon tank, but blood worms are easier to eat, he's not interested in shrimp anymore, lol! 

Meeresstille said:

Can I keep them or is my 40 gallon tank, (48 inches long, has 2 AquaClear 50 filters) over stocked as it is now?
1 Betta
7 Kuhli Loaches
14 Harlequin Rasboras
7 Pygmy Cories
a colonie of Red Cherry Shrimp

Click to expand...

 
That tank is not overstocked.  A good mix of mid-water and bottom dwellers so none of them feel too confined.  Each shoaling fish has a good number, and they are all fairly relaxed fish, if anything they are reclusive.  The harlys will work as dither fish, to help the others remain calm.
 
 
Sorry for your issues, but that tank isn't really one of them. 

eaglesaquarium said:

Can I keep them or is my 40 gallon tank, (48 inches long, has 2 AquaClear 50 filters) over stocked as it is now?
1 Betta
7 Kuhli Loaches
14 Harlequin Rasboras
7 Pygmy Cories
a colonie of Red Cherry Shrimp

Click to expand...

 
That tank is not overstocked.  A good mix of mid-water and bottom dwellers so none of them feel too confined.  Each shoaling fish has a good number, and they are all fairly relaxed fish, if anything they are reclusive.  The harlys will work as dither fish, to help the others remain calm.
 
 
Sorry for your issues, but that tank isn't really one of them. 

Click to expand...

 Thanks, eaglesaquarium! Once the ich is gone (I think I did catch it early, there were only a few spots on some of the Rasboras, none on the Betta) and when the plants have recuperated I'll be posting some pics of the tank. I do love my underwater garden!

In the picture it looks like a lovely underwater garden!

Thank you TallTree!   
 
It is soooooooo relaxing to sit and look at the tank!