Review on 🌱 ZRDR CO2 Generator System with Dual Gauge Display and Automatic Pressure Relief Valve 2L Carbon Dioxide Supply for Plants and Aquarium, Stable Output by Sandhya Ramirez

You get exactly what you see in the photos. I got $99 with two gauges for low and high pressure. And the quality of the components is pretty good. CO2 takes several hours to build up pressure. It starts off quickly, then slows down sharply to the point where it seems like it's unresponsive, but for about 4 hours the pressure in the canister was 10 and the next day it dropped to 20. During the first 30 minutes, the bottom of the canister becomes cold due to a chemical reaction, place something underneath to catch the condensate. Also the solenoid gets very hot but seems to be working fine. I've also seen others point this out, so maybe that's what it's meant to be? Only time will tell how long the magnet will last. Otherwise a very solid package. ***Update 11/25/2020 Everything still works perfectly. Very easy to fill up. Sometimes I get crusts on the bottom and I just use a long wooden stick to break them open so they come out.