15 years ago I had a densely planted aquarium, lots of light (CFL) and CO2. It sucked wondering if I had enough CO2 in the water column. This kit (Glass Drop Tester, Chart and Reagent) takes the guesswork out of CO2 readings. The big plus of this set is the excellent customer service. I had a question about replacing a reagent (monthly), I emailed Colin Grice and he responded within 5 minutes! When is someone going to do this? Most jobs will put you on hold for (at least) five minutes and if you email the company, good luck if you get a response within 48 hours. Thank you Colin!
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