Reposting. I apologize profusely for not filling out the form earlier. I'm new here, and I was at work and panicked when my fiancee called me saying my new Angelfish's condition was getting worse. Hopefully I can find someone who can help me. :(
1. Size of tank?: 75 gallon long.
2. Water parameters
a. Ammonia? 0
b. Nitrite? 0
c. Nitrate? Roughly 10.
d. pH, KH and GH? PH is 7.8.
e. Test kit? API Master Kit.
3. Temperature?: 80 degrees F.
4. FW (fresh water) or BW (brackish)? : Freshwater.
5. How long the aquarium has been set up?: Roughly six weeks.
6. What fish do you have? How many are in your tank? How big are they? How long have you had them?: Six fish in this tank. One Senegal Bichir (3.5-4", had him for two months [was in a 30 gallon prior]), one Red Tailed Black Shark (3", had him/her for two months, was also in the 30 gallon), one Pictus Catfish (3.5", had him for two weeks), one Opaline Gourami (3", had her for two weeks), and one Veiled Angelfish (1.5", had her for two days).
7. Were the fish placed under quarantine period (minus the first batch from the point wherein the tank is ready to accommodate the inhabitants)?: Not in my tanks.
8. a. Any live plants? Fake plants?: Two fake plants (put them in there initially for territory markers) and four live plants (four miscellaneous medium plants purchased from Top Fin that I have yet to identify).
b. Sand, gravel, barebottom?: Silica sand.
c. Rocks, woods, fancy decors? Any hollow decors?: One large rock cave with many openings, one aquarium decoration (skull), one hollow log, one hollow floating aquarium log, five river rocks.
9. a. Filtration?: Emperior Bio Wheel 400 with two filter cartridges and two media cartridges, both filled with polyfiber.
b. Heater?: Yes, heats up to 90 gal.
10. a. Lighting schedule? What lights are used?: Lights are turned on at 9 am, off at 9pm after feeding. I use a 48" Tropic Sun light from Zoo Med.
b. Any sunlight exposure? How long?: They are in a garage with one window so there is indirect sunlight exposure during the daylight hours.
11. a. Water change schedule?: Weekly.
b. Volume of water changed?: 20% weekly, 30% monthly.
c. Well water, tap water, RO water?: Tap water.
d. Water conditioner used?: Stress Coat.
e. Frequency of gravel/sand (if any) vacuumed?: Bi-monthly.
12. Foods?: Frozen (thawed before feeding) bloodworms and Hikari bottomfeeder pellets daily. One slice of cucumber weekly. Freeze dried bloodwords and shrimp served sparingly as treats, relatively three times a week.
How often are they fed?: Listed above.
13. a. Any abnormal signs/symptoms?: The Angelfish is the one with an issue. I brought her home two days ago, on Saturday. The next day I noticed a chunk missing from her dorsal fin and guessed it may have either been nipped prior to my purchase of her, or during the night before. However today, her dorsal fin's condition has deteriorated further. It is currently only her dorsal fin affected. I have a 30 gallon tank which currently houses a small Blood Parrot. I can move the BP into the 75 and move the Angel into the 30 for now to quarantine her if an illness is suspected.
b. Appearance of poop?: Normal, I believe. Thin strings of pale brown feces.
c. Appearance of gills?: Normal.
14. a. Have you treated your fish ahead of diagnosis?: No.
b. What meds were used?: None.
15. Insert photos of fish in question and full tank shot if necessary. http://i42.tinypic.com/1etg9f.jpg
<-- Full tank shot http://i42.tinypic.com/1zb7y8k.jpg
<-- My Veiled Angel with deteriorating dorsal fin.