Ya I was about to say what are you flushing for? You haven't had time to even give them enough nutrients to flush the nutrients out. They say its good to flush once every 30-40 days.... I dunno never tried that I just flush 2 weeks before harvest. If you just flushed them no don't water on saturday unless they need it. You'll be able to tell the plants leaves will droop and the leaves themselves will feel very very thin like a layer got skinned off of them or something. The gnats are from the overwatering. Lets say one got in when you opened your front door. They hence found your grow and reproduced. The gnats will only lay their eggs in moist soil, so since you had a "schedule" and didn't go by when the plants just needed water, you created a perfect environment for the gnats to thrive. I'm not coming down on you at all bro just need to get the watering thing under control. I too had the same problem. Patience pays in the end is what I've found.
thats the only way I will figure it out. It wasnt really a schedule more just water, water feed. No specific days but obviously it is over watering. The whole reason the SS is being flushed is because there was a salt build up in there. I found out that plants were not getting a lot of water bearly enough to come out the drainage holes thats the only reason I can think a salt build up could occur since before the last feeding the SS were only getting Flora Nova grow. 
hopefully I see the girls tomorrow.
, and give them water (p.h.ed at 6.7) from a wand or watering can that aerates the water really well, so approximately 5-10% of the volume of water going into the pot drains out..... measure ph, and TDS ppm if possible, of your runoff..... my guess is you throw in water phed at 6.7, it will come out 6.2-6.4 (ppm of approx 150-300 depending on what it is going in)....... your in the coco gold right...... all of this advice is based on that..... sorry I haven't been through for a couple days, I been busy ......
