The meds will REALLY cloud your water - by the end of the treatment it will look like a giant cloud. Even tho the package says it does not affect your bio-filter it may kill it - that happened to me when I used Maracyn and Maracyn II (together). I don't know which of the two meds it was so I would check for ammonia and nitrites at least once a day using a liquid reagent kit (not strips).
35G barebottom: 2 boesemani rainbowfish, 4 congo tetras, Low light plants (1.5wpg) attached to or planted in my own handmade ceramics - Anubia v Nana, Anubia v Barteri, Red Rubin Sword
2.5G - Spot (beautiful betta - Soft pink with red spots on his fins. Java Moss.