Yes it will take some time. You may not see any change in the leaves but you should stop things from getting any worse. If you were thinking the plants are just going to green up you might be disappointed. You could probably use that with each watering for awhile. Do you have a ppm meter? If so I'd be curious to see what the ppm's are. And if you think that smells, the Pump and Grow smells like a combination of vomit, dog piss, and stinky feet.
Good luck
I was pretty sure it was going to take some time, and the leaves already affected wont magically go green again lol. I dont have a ppm meter, I am going to get one soon. I wanted to prove to my wife that its cheaper to grow than to go to a dispensary first, and as long as I can get 2 oz then I would have made all my money back. So after these 3 are done, im going to go a bit different route next time. Im going to get good soil, good nutes, etc from Amazon, not just what we have around here, which is nothing. We had 1 hydo shop but it closed down because covid. Im still looking at what to get for next run, but im thinking its probably just easier to follow the tried and true method - FFOF, FFLW, and FF nutes.
Another question, could it be im possibly underwatering as well? I watered last night and the very top of the soil is dry, and its not really dry an inch down, but its getting there already. I will have to water tomorrow for sure. When I watered, there also wasnt much runoff. 2 of them I watered with 2 L, and 1 of them with 1 L. The one that I watered with 1L (Green Crack) I watered with 2L before and it immediately showed signs of over watering with the leaves drooping and heavy. Right now all the leaves for all plants feel a little crispy. Im thinking maybe im not giving them enough water as well? RIght now its 2L and 1L for Green Crack every other day, or every 2nd day. Also, the leaves are looking like they are barely starting to perk back up, but looking like Mg deficiency. Kellogg's says use once a week, so the other days should I use some Epsom salt with ph'd water to try and bring the Mg up?