D501 DIY CO2 Diffuser Kit Planted Aquarium CO2 Diffuser Needle Valve Pressure Gauge Generator

Features: ? Pre-connection, avoid wrong connection. Pure and long lasting Co2, promoting plants growing. Easy to set up, low cost, convenience, practical and safe. Corrosion-resistant, multi-tool holder shelf. Universal design, fits most tanks or aquariums. Unique acid particles blocking filter to prevent clogging and corrosion tuning valve and prolong life. Tuning valve Removable cleaning. Transparent circulation piping, fluid flow can be observed at any time. Adjustable pressure relief safety valve acid value (manual + auto). Turning clockwise is to increase the safety pressure level---> The valve will let the CO2 gas release out of the bottle at higher pressure level automatically. Turning Anti-clockwise is to decrease the safety pressure level----> The valve will let the co2 gas release out of the bottle at lower pressure level automatically. ? What do you need to prepare for this systems? below(not included): ? 200g x Citric acid powder or Vinegar 200g x Baking Soda powder 2 x Soft drink bottles (2 Liter) ? Package Included: ? 1 x Pro Needle Valve 1 x Safety valve (with pressure gauge) 1 x DIY CO2 generator main body (colour by your choice) 1 x Complete connecting CO2 tubing 1 x English manual ? Details pictures: