Ecosphere Technologies Inc., a Stuart-based company that created an eco-friendly way to treat fracking wastewater, is demanding $300 million from Halliburton Energy Services Inc. for breach of a nondisclosure agreement.

Ecosphere is represented by two Palm Beach Gardens law firms, Leopold Law and McHale & Slavin. Halliburton was given notice of Ecosphere’s intent to take them into arbitration Wednesday.