Sorry to hear David, I thought the acriflavine fixed them up. What type of symptoms?
Eddie
All the fry died. I believe I know what caused the problem...contamination from when I used the tank as QT in between batches of fry. I didn't use the same media and was sure to clean the tank and equipment with PP, but I suspect it wasn't enough.
As a result, I've totally torn down my QT after running PP in it for three days. Then I took my bio-media and soaked it in chlorine solution and wiped the tank down with chlorine solution as well. It's empty and dried out at this point and I will start again. I'll add prime and run for a few days then drain and fill again before putting fish in.
I have a new batch of wrigglers getting ready to go free swimming, so the fry tank will be ready when I need to separate the fry.
Anything other steps to take?
Sorry to hear David, I thought the acriflavine fixed them up. What type of symptoms?
Eddie
IMO 4-week syndrome is kind of a catch-all diagnosis for when we don't know what the problem is - kind of like 'the plague' is used now. Since you had been having problems for a while now, it is best to start over. Otherwise, since you were keeping your tank clean, I would have tried Quick Cure if Acriflavin didn't resolve the problem.
I've found that formalin, or Quick Cure, which is formalin & Malachite Green, is successful most frequently when this type of trouble comes up in very young fry. The darting occurs when they are being severly bothered by external parasites. This is, of course, if you are doing large daily wc's with a trusted source of water and wiping the tank down daily. If not, deal with those first and add acriflavine @ 1drop/gal.
Kacey