All you can do Bob is just what you are doing really - it's upsetting to lose fish from illness, and to have the added complication of poor water quality doesn't help.
As mentioned earlier, when this is all over, and you have finished the treatment for ich and fin rot you have to sort out your stocking - the clown loaches and the angel need a bigger tank for example.
For now though, concentrate on getting the treatments done and then we will help you decide on what fish to have etc.
Dont hesitate to come back with any questions you have Bill.
TROPICAL TANK-Elite Tank - 207litres
6 Harlequin Rasboras, 5 Emerald Eye Rasboras, 10 Cherry Barbs, 2 Bristlenose Plecs, 2 Panda Corys. 4 Dwarf Chain Loaches.
ViaAqua Tank AR620 97litres
1 red male betta, 1 BN