i am useing ionic grow its says the mixture should be 7 ml per litre and the ec for hydro 2.0 ns 20 cf my plants are about a week old there is 12 litres of walter in the tank i think this may be a bit to much strength can someone tell me the recomended dose you start with them i have a ec metre i dont think it is working properly is there antway of me testing it to see if it is working properly many thanks am i right in thinking if i mix a litre of water and 7 ml of ionic the reading should come out as 2.0 first time grower cheerz
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