I have a 10 gal tank that was almost done cycling (3 weeks) and sudden severe problems required me to make almost a complete water exchange (90%). This was a week ago.
Tank seems to now be going through a mini-cycle in that I have low ammonia and nitrate readings. Nitrite is almost 0 but not quite. Ph is fine at 7.2. No meds. I use the usual Prime and NovAqua. When the ammonia gets a little higher (a little over .5), I do a 20% water change and nothing more.
Purchased a calico fantail (2" tip-to-toe) and a redcap oranda (3.5" tip-to-toe) 6 days ago. They both were doing great until this morning. the fantail has been hovering in the middle of the tank and not too enthused about eating. The oranda is more active and eats about the same, maybe a tiny bit less, but I just now noticed she has what appears to be red streaks in her tail. These red streaks look exactly like little spider veins on a human. Her tail used to be really white and so I was able to see this right off the bat.
Last night I thought I saw some tiny little white dots on her tail which made me think of ich, but I decided to wait a little and see if it developed further in case it turned out to be something silly like little air pubbles or something. Since last night she doesn't appear to have picked up anymore dots, but I'm pretty sure they aren't air bubbles cause they're still there.
The fantail's fins all appear to be slightly limper and a little bedraggled.
I have in my fishy medicine cabinet the following items: Maracyn, Maracyn Two, Coppersafe and Maracide. I haven't put anything in the tank yet though.
Any ideas?