Cleaning Off Mineral Build Up

[Orchid Whisperer]

Remember, if you are re-using leca, once you have cleaned it, you should also heat treat it to kill viruses. Following a thorough rinse and long air drying, I would put it in thexoven and slowly raise temperature to 500 F, leaving it at that temp for maybe a half hour. Let it cool in the oven overnight. This is most practical for large batches.