Preparing for Small-Scale Ocean Buffering Using Alkaline Rock and Chlorella vulgaris: A Pre-Trial Protocol for a Grassroots Approach to Carbon Sequestration and pH Stabilisation.

This pre-trial protocol outlines a grassroots experiment using Chlorella vulgaris microalgae and locally sourced alkaline rock (serpentine) to investigate small-scale ocean buffering and carbon drawdown. Developed as part of the Ocean Buffer Project in Cornwall, UK, this trial proposes a simple, low-impact design using recycled materials to simulate biogeochemical carbon sequestration and pH stabilisation processes. The study aims to demonstrate that algae photosynthesis and mineral weathering can work synergistically to raise water pH and reduce dissolved CO₂. This paper shares the hypothesis, methodology, and design for a 12-week trial preceding formal data collection. All materials have been chosen for food safety, low impact, and circularity. A peer-reviewed research paper will follow upon completion of the trial phase. The author welcomes constructive dialogue and collaboration.