Hey GC! So I'm 3 weeks into my first grow, and up until this last week, despite making pretty much every rookie mistake possible, things didn't seem to be going too badly...should have guessed it was only a matter of time though. I'm growing 8 plants...5 White Rhino, 2 Ice Breaker, and a Big Bang 2. transplanted into 5 litre pots about a week ago, and began feeding them Ionic Grow with Greenfuse stimulator, at 25% rec amount, every 3 days. Now I think I might know what caused the problem, just unsure of the best way to fix it if I'm right. I filled a 20 litre tank with tap water, ph'd it at 7.2, then added the nutes and again ph'd it, still 7.2, so ph'd down to 5.8....thought this was fine, until I checked the ph again a few days later only to see it read 2.8! lol (never buying a Chinese ph meter again!). So essentially from day one I have no clue as to what the PH level of water they have been receiving, and my guess is that it was most probably too high, resulting in a nutrient lockout?. I ordered a new PH meter immediately, but it only arrived yesterday (sods law about 30 minutes after I reluctantly gave them another feed with undetermined PH level) So today, I took the plunge and flushed the worst one affected with 15 litres of 5.8 PH water with 25% rec amount of Ionic Grow....now wondering if it's wise to do the same with them all straight away?, or should I wait until they have completely dried from the last feed?. I will try and upload some pics shortly as I'm sure that will make it a hell of a lot easier to see the issue, just need the wife to get home first and tell me where the camera is lol. Cheers for any advice guys, Peace - Breezey