Ditto Lisa - you ask advice, its given.
No one has said to you 'you can't keep the CAE with xxx or yyy' purely to annoy you, or to upset you, no one has pointed out that dojo loaches require a cooler temperature than your other fish to wind you up or get at you either.....
This advice is so that your fish live a natural lifespan, and show their natural colours and behaviour, so that you can enjoy them to the full.
As well as doing the things suggested, ie suitable tank for the dojo's at the temperature they prefer, return the CAE (which are truly EVIL creatures when more mature, horrid little things), personally id suggest you change the gravel in your tank - its far too bright for the farlowella - they are shy nocturnal things, a bright sharply lit environment with pale substrate will stress them out and that will shorten the life span. For the same reasons id provide more planting and of course bogwood which isnt for decoration, its a dietary requirement!
Or you could ignore us all but dont be surprised when you struggle to get advice in future as to why your fish are dying.