Roots feel like they have salt on them?

fubar4200

Member
2 weeks into flowering and I changed res. on sunday. 3 part gh nutes. I used schedule on bottle. I must say this is the first time I added full strength nutes. I have an 18 gallon res. I usually only added nutes for about 10 gallons of water. This is first time I actually used nutes for 18 gallons. Did I over nutes? Any help would be great. I did change res. to fresh water last night to flush. Should this help?
 
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