Can you use renderer.enabled on array members ?

Hello I am a beginner so I'm not sure if this is possible.

I am instantiating a column of cubes and I am trying to show / hide each member based on a value.

Each member of the array is the same prefab.

In this code all 5 blocks are showing, even though I only have renderer.enabled true on the second member.

using UnityEngine; using System.Collections; using System.Collections.Generic;

public class PlantStats : MonoBehaviour {
public GameObject[] moisHealth; public GameObject[] tempHealth; public GameObject[] lightHealth;

 private float xDirection      = -0.24f,
               moisYDirection  =  0.24f, 
               tempYDirection  =  0.24f,
               lightYDirection =  0.24f,
               zDirection      = -0.07f,
               moisGrowAmount  =  0.09f,
               tempGrowAmount  =  0.09f;

 private int moisHealthChecker = 0,
             moisArrayValue    = 0,
             tempArrayValue    = 0,
             lightArrayValue      = 0,
             plantHealth          = 0,

// sensor values moisSensorValue = 0;

 void Start () 
 {    
     PopulateMoisture();
     PopulateTemp();
     PopulateLight();    
 }

 void Update () 
 {
     if (Input.GetKey(KeyCode.Alpha1)) 
     {
        moisHealth[0].renderer.enabled = true;
     }
     
 }
 
 void PopulateMoisture()
 {

     for (int i = 0; i<=4; i++)
     {
         Vector3 cubeMoisPosition = new Vector3(transform.position.x + xDirection, transform.position.y + moisYDirection, transform.position.z + zDirection);
         GameObject newMoisture = Instantiate(moisHealth[moisArrayValue], cubeMoisPosition, transform.rotation) as GameObject;
         moisYDirection = moisYDirection + moisGrowAmount;
         moisArrayValue++;
     }    
     
     moisHealth[0].renderer.enabled = false;
     moisHealth[1].renderer.enabled = true;
             
 }