Losing small tetras every few days

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Mythic Figment

Feeder Fish
MFK Member
Jul 27, 2012
2,117
2
0
Florida
Okay, so I have a 20 gallon high with 6 small 1.5" Angelicus loaches, 2 rummy nose tetras and 5 neon tetras. I went through what I believe was a small ich outbreak about 2 weeks ago. I caught it super early and began treating with Rid Ich Plus. At the time, I had 5 neons and 5 rummy nose tetras. I lost 3 of the rummy nose and 2 of the neons over the 5 days of treatment (treated 3 days after seeing last white spot) and the following 2 days. So I restocked with 5 more neons. My loaches are perfectly fine and seem quite healthy and happy. I added the 5 neons to the tank about a week ago and have lost one every 2-3 days. I can't figure out why. I am cycling a 90 gallon tank (just finished week 1 of 6) and it will eventually be a discus tank. My tank parameters are as follows:

pH is between 7.0 and 6.5 (I added driftwood to the tank 3 weeks ago after a week long soak)
Nitrites and nitrates are always at or very near 0 (I change roughly 25% of the water once a week)
hardness was rather high when the tank first started, but I have been cutting it with about 40-50% distilled RO water and it is 120ppm
The discus will require a higher temperature than most fish tanks, so I have the temperature at 80 degrees Fahrenheit in the 20 gallon. That way I can move everyone over to the 90 without shocking them.

As I said, the loaches have shown no issues at all. They forage almost non-stop (even though they are very well fed) and are very active in general. The tetras are all a little skittish still and have just started to settle in and get use to the routine of feeding times. I feed flakes twice a day in small amounts and the loaches get special food every 3 days in the form of sinking pellets and algae wafers.

I can't think of any more information I can share that can aid you in helping me figure this out. I have read that neons are quite hardy, but I have had little luck with them. The rummy nose I have read are a bit more fragile than other tetras and that might explain the die off of them, but the remaining 2 rummy nose school with the neons and seem to be in very good health.

Can anyone recommend something I can do to either reduce the die off rate or eliminate it altogether? I would greatly appreciate any advice you can give me. Thank you all.


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I have read that neons have been inbred so much, their gene pool has become poor and they have become much less tolerant fish that often experience high die off rates due to their sensitivity. Is this true? Has anyone had great success with neons?


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I think neon tetras are disposable fish, almost the same as feeder fish. Except costs more, better looking.
If you really like this particular species, just keep buying more neon tetras to restock. Wait for 99 cent sales.
They're fragile and disposable. These long skinny tetras don't have the durability of the wide bodied tetras.
neon tetras lay 130 eggs at once. Most are meant to die.
 
I know they are not expensive, but I don't want to waste money on fish that keep dying if I can stop them from dying. My 90 gallon layout is going to be my 6 Angelicus loaches, 6 discus, 20 rummy nose tetras and 30 neon tetras. I have heard that cardinal tetras are hardier because of less inbreeding. Would they have less die off than neons?


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Cardinal Tetras are bigger then Neon right? The Neon would become a snack to the Discus, I would look for something a bit more bigger in the body to avoid becoming a snack.

As for the Ich outbreak, just up the temp some more (while making sure you provide enough oxygen - tossing in an air stone or two can help with this) and add some salt. I really don't like to dose medication unless I really have to, luckily Ich is one of those things that you don't need to do so with.
 
Contrary to popular belief, neons are not hardy. They're actually quite fragile and do best in soft acidic water.
 
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