Q-Grow CO2 Endurance Test Indicator Monitor Drop Checker Test for Freshwater Aquarium - Ball

Nice looking, but is working with a big delay take about 3-4h to do some changes

Really easy to set up and install thanks

Having just converted from marine to a planted tropical tank. I’m still learning everyday! Recently installed Co2 and was dosing 10bps which was still not registering on my drop checker that came with my Co2 dosing kit.Looked on amazing and found this from Q-Grow arrived very well packaged I was actually impressed with how well it was packed! Instructions easy to follow all kit needed to measure and insert Ito drop checked was included.Installed on my display tank and low and behold a couple of hours later started turning a more desired colour. I have attached a picture of both drop checkers and do not regret buying this!

Best drop checker I've used

The wide bend design allows for aquariums that have a narrow sill or frame. This glass product does need to be in contact with the aquarium water - something to bear in mind if you sometimes have a lower water level (e.g.: when quarantining plants or new fish) .I would therefore suggest no more than 2 inch (5cm) gap between tank rim and water surface for glass only aquarium (slightly less - maybe maximum 4cm if framed or angled aquarium to water).

Great easy to use product, good packaging quickly delivered. A must have if trying to grow real plants in an aquarium. More expensive than others on amazon but contains everything needed. Very pleased

does the job well

Ale is ok