M B,
I also find using a knife to open the tablets is helpful.
The one nice thing about the tablets is confidence about the dose you're getting. I'm not confident that the size of the drops is constant, and the viscosity of parts A and B seem to be different. (Once I measured the amount I got from A and B by dispensing equal number of drops, but the amounts weren't equal. I've forgotten the specifics, but the results prompted me to buy some plastic pipettes so I could more accurately dispense Aquamira liquid.) Also, if you want to treat several containers at once with the liquid you have guess how much to pour into each bottle. So I'm looking forward to switching completely to tablets. For me the simplification is worth any increased expense.
So I consider myself a big beneficiary of this thread. I should have known about the equivalence of these methods, but I didn't, and what I've learned will be helpful.
