My 75 gallon in only a couple of months old. I have some sword, java fern, anacharis, and what the store said was water primrose. I decided to try excel to help spur growth. I only did the recommended daily dose for two days when my anacharis started looking pretty pitiful. I didn't do the suggested big first dose, and now I'm glad I didn't. I have since ordered equipment to go with a pressurized co2 system. I'm hoping the anacharis will rebound with the new set up but in the last week since I tried the excel it hasn't really improved. Does anyone have experience with anacharis bouncing back? I wouldn't mind so much if I didn't have such a hard time finding it in the first place.