FAQ

Reefstoration stands for Reef Restoration Research & Innovation, a platform by Diponegoro University Center of Blue Economy Research (CBER UNDIP) to provide research, education, and innovation for marine ecological engineering.

Reefstoration focused on developing effective, efficient, and sustainable ecosytem restoration and resources management system. We provide eco-friendly construction products, ecosystem restoration services, and blue economic education.

We design and manufacture a variety of specialized structures, including Artificial Patch Reefs (ideal for large-scale seabed restoration), Coral Spiders or Spider Webs (highly effective for stabilizing loose rubble substrates), and custom-engineered structures tailored to the specific morphology of target coral species.

Coral reef modules are specifically engineered as substrates to secure and grow coral fragments, fostering new colony formation. Artificial Fish Apartments, on the other hand, feature larger internal cavities and voids designed to provide shelter, spawning grounds, and nursery habitats to rapidly replenish local fish populations.

Yes, environmental safety is our top priority. All modules are built using durable, marine-grade, eco-friendly materials—such as specially formulated pH-neutral concrete made from coal power plant's fly ash-bottom ash (FABA) and biocompatible coated steel. They are completely non-toxic, highly resistant to wave action, and engineered with surface textures that naturally encourage the settlement of wild coral larvae (planulae) and the anchoring of transplanted fragments.

We use FABA to champion industrial symbiosis and the circular economy. Beyond sustainability, FABA chemically enhances the modules. When properly processed, the pozzolanic properties of fly ash increase the concrete's long-term compressive strength and durability against harsh marine environments, making it an excellent alternative to standard OPC (Ordinary Portland Cement).

Safety is our absolute priority. The FABA used in our modules undergoes a strict stabilization and solidification process. By binding the ash within a specialized concrete matrix, any potential heavy metals are permanently locked inside and neutralized. Extensive laboratory leaching tests (such as TCLP and SPLP) are conducted to ensure that our modules meet and exceed international marine environmental safety standards before deployment.

Research and our field trials show that our cured FABA-concrete modules achieve an optimal surface roughness and a neutral pH balance that mimics natural limestone. This provides an excellent bio-compatible substrate that actively encourages the attachment of natural coral larvae (planulae) and accelerates the encrustation of crustose coralline algae (CCA).

Marine restoration success depends entirely on environmental conditions. Our team conducts rigorous biophysical surveys prior to deployment. We assess critical parameters including water quality, current patterns, light penetration, depth, historical Sea Surface Temperature (SST) fluctuations, and sedimentation rates to ensure the chosen site can sustain long-term coral growth.

Deployment is executed by our team of certified scientific divers and marine logistics experts. Modules are lowered using specialized vessel equipment and precisely anchored or arranged on the seabed according to a pre-approved ecological zoning blueprint, ensuring zero damage to any existing nearby marine life.

Yes. During the critical establishment phase (typically the first 1 to 6 months), regular maintenance is vital. Our divers perform routine cleaning to remove excessive biofouling (algae overgrowth), clear marine debris, and manage coral predators like the Crown-of-Thorns starfish (Acanthaster planci) that could jeopardize the young coral fragments.

We conduct periodic ecological monitoring using standardized scientific protocols, such as underwater visual sensus, photogrammetry, quadrat photography, and the other possible methods. We track key performance indicators including coral survival rates, colony growth speed, and the return of biodiversity (fish and macrobenthos abundance). Detailed progress reports are regularly delivered to our clients.

We collaborate with a diverse range of stakeholders, including government bodies (Ministries/Departments of Marine Affairs and Fisheries), corporate clients seeking to fulfill ESG (Environmental, Social, and Governance) commitments or impactful CSR programs, non-profit organizations (NGOs), and local marine tourism operators or eco-resorts.

Absolutely. We can scale the project size, adjust the number and type of modules, and tailor the duration of the post-deployment monitoring phase to match both your company’s environmental impact goals and your specific budget constraints.

Timelines vary depending on project scale and seasonal sea conditions. Generally, the process—encompassing site analysis, data processing, module manufacturing, and coral fragment sourcing—takes between 4 to 8 weeks before the underwater installation phase begins.

Climate resilience is factored into our strategy right from the Site Selection phase. We study regional thermal baselines and consciously select resilient, locally adapted coral fragments that demonstrate higher tolerance to thermal stress. While climate anomalies (like severe El Niño or IOD events) pose an inherent risk, our maintenance and monitoring packages include contingency options for restocking or re-transplanting fragments if minor environmental damage occurs during the contract period.

The structural framework of our modules is engineered to withstand marine elements for decades. However, our ultimate ecological goal is for these man-made structures to become completely overgrown by natural crustose coralline algae and hard corals, eventually integrating seamlessly into the seabed as the foundation of a fully functional, self-sustaining natural reef.

Yes. Our utilization of FABA complies strictly with government environmental regulations regarding non-hazardous waste utilization. Every batch of raw material is legally sourced, fully tested, and certified for safe environmental application, providing our corporate and government clients with total legal compliance and peace of mind for their ESG reporting.