Could it be due to genetics? There was a finger left at the bottom of the pot, it's not old but could it have gone bad? 31 days in, 15 grams, 0.25L water, 0.5m growth. 6 days in, 21 grams, 0.7L water, 0.7m growth. Bloom algae, 10 days in, 25 grams, 0.5L water, 0.5m growth. 13 days in, 28 grams, 0.7L water, 0.7m growth. Tox, 1.5m bloom algae, 23 days in, 38 grams, 0.9L water, 1.8m bloom.