I have clones of a White Rhino and Sour Diesel. My buddy who gave them to me told me to crank the PPM's up to 1000. He uses Pure Blend nutes. I went to the grow store to purchase the same nutes as the guy who blessed me with the clones, but was discouraged because the grow store owner told me if I didn't run a RO system for water that my plants would start to yellow. My buddy who gave me the clones grow room is maybe 40-50% yellow. I took the owners advice and went with GH micro,grow,and bloom. I started out with 1/4-1/4-1/4 (micro,grow,bloom) to a gallon of water for 1 week. Today I bumped the nutes up 1-1-1 (micro,grow,bloom) to a gallon of water. My PH is 5.8. My medium is rockwool. My grow system is Ebb&Flo. My ? is what would be the first signs of overfert.? I just bumped up the nutes today. Is it to soon to look 4 stress/discomfort signs? This is my first time growing and it makes me feel like a 1st time father all over again (worried and over protective)