Thanks Snipe. I have decided to not lose any more sleep over this for two reasons. Over the last week or so, I have tested the water using different types of pool test strips. All showed the alkalinity and pH in the desired range. Secondarily, we measured and weighed 20 of the 200 RBT when we put them in about month ago. They averaged around 92% of their relative weights. Since Friday, we caught 12 and measured and weighed each. All were 98% or better, with the highest 115%, of their relative weights. Granted, this is not a 100% scientific sampling but it was enough to give me a better piece of mind.

Thanks again to all for your input.

Merry Christmas to all,
Paul