??? A question to all. I had several fish that had septicemia, so I started to treat my 75 gal. tank with Maracyn-Two from Mardel Labs. My levels were all fine 4 days ago and now my nitrite and nitrate levels are very high and the ammonia never seemed to go up. None of the fish seem to be affected by this, and I'm a little puzzled. Are these false reading or actual? The tank did cloud uplike a bacteria bloom, but the instructions said it would. I've been trying to contact the mfg. but have had no luck. Has anyone seen this before.