Water Purifying Ability

The next day, Noel and the others immediately headed to the lake. They had brought several items like buckets and a few tools to measure the poison. 

The lake had a diameter of one hundred meters. It was quite big, but with their plan and strength, draining the lake shouldn't be a problem.

Noel asked, "How do you usually test the poison?" 

"There are a few ways. Test it ourselves, evaporating the water, all using some reagents to incite the poison." Jonathan explained while staring at the lake.

"I see." Noel didn't know much about this work, so he had no comments. 

"I'll bring you a bucket to see how much Spiritual Energy you need to purify one. You should be able to do some rough calculations, right?"

"Yeah."