Royal Queen Seeds - Sweet ZZ - Zkittlez

I'm fighting fungus gnats for some time now. Ive tries spinosad (organic bacteria derived compound), neem oil, neem tree extract. Every one of them did something to limit their numbers. Today I ve watered each one with 500 ml of water containing around 750000 predatory nematodes that feed on fungus gnats larvae. We Will see how theyll respond. For the first time also I've used ratio of clay pebbles to coco closer to 50:50 and I think canna coco is a little to low on potasium for such mix. I ve experienced some potasium deficiency on a couple of biggest plants. Other than that I think they, are doing fine despite my mistake with light intensity and ventilation in the beginning of flowering.