my nano has BGA and im treating with erythromiacyn. Im dosing 1/3 a day for about 4 gallons. I cant comment on the shrimp as the three i had in my nano are very new when i lost 2 of them the third is good. have 2 more days to treat.
EDIT:im dosing until the BGA is gone about 5 days i think.
EM should be fine but don't forget to figure out why you are getting it in the first place. Usually it has to do with a lack of water circulation in the tank. Did it start in a particular area that was sheilded from flow?
If/When you do start dosing, all that stuff is going to die quickly and could foul up your tank pretty easily if you don't do extra water changes, filter, etc.
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