Review on 🔬 OptiCO2 Drop Checker by NilocG Aquatics by Jeremy Jackz

This is my first drip tester and I will buy it again when adding CO2 to other tanks. I just finished planting and filling my tank and put in the dripper. It shows blue because I haven't turned on the CO2 yet. I expect "lab tested 4dKH liquid with PH reagent" to turn a nice green color once I've set up the CO2 flow and timers. The drip bulb diameter is about a quarter as shown in the photo I added. It's big enough for easy color checking, but small enough not to overload my 20GB tank. Indicator solution at less than half the price. The glass construction can be a bit messier than the CAL device, but it should be fine for most people and most tanks. The manufacturer is recommended to add safety/disposal information to the bottle.