think they will survive?

i want to set up a quarentine tank in a ten gallon for my zigzag eel with tail rot. problem is i dont have an extra filter. so.... my options are:1. to take the filet off my other ten gallon, which has 20 baby shrimp and about 30 few day old guppies(not a large bioload), and is planted with a lot of fast grwoing plants and is a well established tank and leave them with out a filter for about 4-5 days. or 2. leave the eel in a ten gallon without the filter and treat him. or 3. or treat the whole 20 gallon tank my eel is in(i dont want to do this)
so my question is which do you think is the best option, do you think the shrimp and guppies will survive(ill probably do a water change halfway through, and i will put a bubble wall in there for circulation) cuz this is the one i am leaning towards. ive had my eel for almost a year and he has grown a lot and is my favorite so i will do what i gotta do but tell me whatchya think

 

i think i may have an extra media bag in that filter should i set it on or near the bubble wall im going to put in the tank?

 

i think i am just going to dose the whole tank. ive stringy poop from my pleco and ottos and chances are some of the other fish probably have somethin too. i really dont want to though cuz my eel is sensitive to medication he always hides for a couple days. gotta be done though he is chasing and biting his tail like a dog with fleas

 

i ended up treating the whole tank and it didnt really seem to help. tried a couple differnent things with no succes. however, i moved him to a larger tank with a smoother substrate and some hiding spots for him so he doesnt have to dig all the time. i think the reduced stress and some salt and cleanrer water did the trick because i think he got better. ill have to give him a good look tomorrow and ill try to get a pic.

 

how exactly do i add pics. it says the bmp extension isnt allowed or somethin [bs]

 

whats the differance

 

ok i think i got um