Help! Loosing Fish

[4littleindians]

Help! I have a 125 g tank. fully cycled 2year old. I have recently lost 1 cory 2 green barbs and 2 tiger barbs and my last neon yesterday...one of  my angel will most likely be next.Symptoms of my angel started with a spot on her mouth followed rapidly by fin rot pop eye red swollen gills. now she seems to be getting white bumps...maybe ich but strangely raised ...few others in my tank have minor fin rot more have red but not swollen gills. 1st eek I was told to treat wit Melafix and do water changes every 3 days. done. second week I stopped water changes and just treated with melafix. my angel continues to get worse and my last green barb has barley a tail left. tomorrow is day 7 of  the 2nd melafix treatment. obviously not enough. so Im asking what is going on here and how do I stop it . I should add this was the advice from my fish guy. also I should add I have loaches and plants. I m still hoping the right treatment can save my female angel I started the tank with her and she is enormous but alas she is in bad shape. Her mouth is rotting and one gill is twice the size of the other...please help.

 

[BerryAttack]

what is your water stats at? Go find out, it'll really help with what is going on.
are you treating the water before adding it in? if not then do it.. 
when cleaning the filter you are using aquarium water to clean the media,, yes? if you are using tap water then you are re-cycling your tank over and over again each time you do it.
were/are you doing regular maintenance on the tank, if not then over time the toxins will add up and boom something like this happens.
 
without the stats of the water you can't give a reason on why this is happening.
 
 
Did any chemicals go into the tank? really think if when doing a water change that if something went into a rinsed bucket or w.e cause that'll help do it.
Also how is your heater? I got fin rot repeatedly in my 36, and ick because the heater was sending out electric pulses that i didn't know about. I changed the heater and treated for the fin rot. (fish with ick died D and never happened again.

 

[Rak9378]

Sorry you are having such problems!    BerryAttack really covered all the info you need to provide so someone could help you.  But I will ask one other thing...did you remove all of the carbon from your filter when using Melafix? 

 

[4littleindians]

My water stats are fine I immediatly brought some to my fish guy ph was a little low but after all the water changes fine now.I even had him check the water Im putting in. I alway stress coat and add stress zyme to my new water before I add o the tank and I always rinse my sponge out in old tank water. the carbon has been removed for treatment on both weeks....my buckets are strictly fish tank buckets. I have to  haul my water in from another source , apparently my well has high ammonia. and yes I check regularly for ammonia.monthly I do 40 gallon water change.... think the bigger issue is the fin rot, pop eye and red swollen gills...the white spots are new yesterday so it didnt start there its just one more additon to the problems. oh also my heater is 6 months old..Im on my 3rd one they just keep quitting..so its still fairly new. this seemed to begin with a couple fishI intrduced from a different fish store than my usual one, so Im wondering if all these things add up to one disease they might have brought with them?

 

[BerryAttack]

without providing the stats of your water we cannot assist you well if that is the case of the problems.
you should have quarantined your new fish for around a week before adding them in, can use a 10 gallon to do that.
 
IMO you should be doing weekly water changes, and in the well if there is any signs of ammonia or anything of the sort I wouldn't be using it. you can use tap water, but you need something to treat against the chlorine.
Set up another tank, or large bucket or something with a heater, bubblier ( i would set up a new tank) and remove all sick fish and treat in there. if you are treating your 120 gallon tank then every day you'll be dosing a WHOLE bottle of metaflex and pimaflex (start using that too). so buy doing it in a small tank you are able to treat them faster.
if you have live plants you can't do this, but if you don't get methylene blue and start treating with that, IMO i've used all three and I find that the methane blue works the best, but thats just IMO
before buying fish, what i do is look at the fins etc to see if there is anything wrong, if there is any sign of disease i hold off. would rather wait to get the fish even if it is on sale at the time and wait until next time.