First Indoor Grow

I started adding Silica in this week to my watering. Ultimately I wanted to give my plants something to be more resistant to pest, better nutrient uptake, and just in general hardier plants. the first moby is developing very slowly but most of its nodes sites are filled so hoping it starts to bulk soon like the others. Still gnats, using nematodes, I cut out the molasses in a attempt to starve and kill the gnats along with drying the mediums out. will need a week or 2 to see the results of this. Still; never seen a adult gnat yet or any on the traps. I also think minor ph issues again. Will have to adjust and make sure my equipment isn't malfunctioning as well as making sure im not fucking it up