VinceGill

This community is truly a wealth of information. Thank you all for your replies. Maracyn is nearly here. Everyone is looking healthy/behaving normally, including the sick mollie. I will run a new 5 day treatment. Again, thanks!

@quikv6 i have no experience using salt in a freshwater tank. Investigating in the past leads me to believe it may be detrimental to my live plants, snail and possibly my corys. Appreciate your feedback, regardless. Thank you.

Thank you for your reply. I will restart the five day treatment. Thank you for addressing quarantine. The other fish, including mollies showed no signs, but i feel like "it's in the water" more so than "it's in the fish" so assumed id be treating a quarantined fish and eventually tankmates anyway. Perhaps this is the wrong way of thinking. Treating in isolation is definitely more cost effective. I also worry about further stressing the sick fish with the net/transfer. Again, thank you for your insight.

Thank you for replying. I was leaning in this direction.

I recently moved all of my new thoroughly quarantined fish to my display tank. About a day/two days later 1 of 4 mollies had the white cottony muck around his eyes and a few spots on his body, also clamped fins. I treated with two days of a five day run of maracyn. My locals dont carry maracyn. He improved day one and looks/acts completely normal day 2. Currently awaiting a shipment of maracyn. Do i do nothing when it arrives if he still looks/acts healthy. Do I start a new 5 day treatment (I bought enough to treat my display tank, rather than my ten gallon QT/hospital tank. Supply on hand was appropriate for hospital tank. These fish were quarantined/med trio'd/and observed for 30+ days before moving to display tank). I'm assuming by the time i see 1 sick fish its too late to ahem, fish him out, and treat him separately - looking for guidance on this particular question. Tons of research has never really addressed this question. Its always how to treat/diagnose, never yes, remove the sick fish/no, its too late. So, when do you quarantine vs when do you treat the whole crowd? And, if you run out of antibiotics do you restart the recommended 5 day when supplies arrive or let it go if the fish are acting/looking/behaving/eating/pooing healthy? 30 gallons, 0 ammonia, 0 nitrite, 5 ppm nitrate, 7.6pH, 77F, many live plants, corys, tetras, mollies, 1 dwarf blue gourami, blue mystery snail. Thanks in advance to the smart, learned, generous, helpful folks who took the time to respond.