I am three weeks into cycling my heavily planted tank, with ADA amazonia substrate. The dropchecker stays bright yellow all the time (dKH 4 water), whether the co2 is on or off. Should I be worried about this, nitrates are high but the colour doesn't change after 50% water changes every other day. My pH test strips say 6.4 but they only go down to 6.4 so am am unsure whether I should be trying to raise KH (normally 3), reducing co2 or both.
Many thanks
Many thanks