no confusion, just wanted to know how to answer
The directions said to add a tablet per 10 gallons of water once a week, I can't comment on the effectiveness, i have no experience with them, i'm rowing the same boat as you. Can't comment on the excel, but i was going to purchase it and give it a whirl. I was at an LFS and picked up some flourish, but not the excel. I've only done one dose and that was last week. For the past couple of weeks i've also been cleaning my glass tops every other day, and i've experienced faster growth, the flourish may have helped too.
I've had my eye on this
Hagen unit, not too expensive and it states that a dose will last 3-4 weeks. Heres a customers comment from the DRS site:
Great product! I have two in a 55 gallon tank. The plants are so thick that I have to trim them back every two to three weeks. I am able to grow plants that wouldn't grow before I had CO2 in the tank.
Connie Scoggin
Kingman, AZ