Chronic renal disease electrolytes change

increase potasium, phosphate, hydrogen (metabolic acidosis), 

low calcium, vitamin D, 

Complication of renal disease:

HTN, perocarditis, HF; ecephalopathy; Neuropathy; osteitis fibrosa cystica from 2nd hyperparathyroidism;Osteomalacia; pruritis

Also Normocytic normachromic anemia