Trying my best to fit 5plants in 3x3

Just continue to use canna nutritions and seems like biobizz all mix and canna have a lot of leaf growth other than light mix soil but all growing nicely some leafs yellowing at the bottom but might be light issues its only 2x 150w ts1000 and cant penetrat through the top leaves Ph 6.2-6.5 Ppm 1100 Humidity during rainy days 70% dry days 60% Temps not going over 26 and below 17