No TDS meter, so 25% Canna when little, rising to 100% (20ml per 5L) when 12" tall. Change to Canna flores nutes 2 weeks into flowering. Ph when mixed is 3.5, I up it to 5.3 and top up with plain water every 2 days. Change nutes every 2 weeks and the Ph of the old stuff is usually 8. Not right, I know, but I seem to be getting away with it. (As the man said as he fell past the 10th floor.
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