Swim put to much rootbark into the mixture. It appears to be to thick for the amount of water in the jar. What should swim do? Swim has another jar he could transfer half into and add water? Any suggestions are helpful.

Add water...simples..

Stick to the tek you are following and compensate the amount of water/lye/vinegar or whatever you are using according to the amount of bark.

Try to check again the wiki and figure out the amount by yourself, you might need reading your tek a couple more times before proceeding.