I have a Discus Aquarium and therefore often and especially reliable must measure the water values. From measuring rod, I advise that Tröpchentests are simply more accurate and reliable. The JBL suitcase is relatively expensive, but anyone who has sensitive fish, can not do without it! It is important to know that the case is not complete, as it looks at first slip. If you want to measure copper silicate, oxygen, and CO2, you have to buy additional tests. But the current test are, especially PH value, GH and KH. The case is filled with pens, syringes, dipstick, small glasses and measuring cups. A Super Set! And do not worry .... everything is described super, because you can not go wrong. My conclusion: Better to have properly invest money and buy the suitcase instead gradually or favorable variants. From experience I know: who buys cheap, buys twice.
