Question ArgumentNullException: Value cannot be null. Parameter name: particles

So I've been trying to solve this issue for a few hours.

I'm doing a project in which we use multiple liquids, so of course I'm using the particle system
The code works with liquid A but when attempting the same with liquid B i get the error:

ArgumentNullException: Value cannot be null.
Parameter name: particles
UnityEngine.ParticleSystem.GetParticles (UnityEngine.ParticleSystem+Particle[] particles, System.Int32 size) (at <7597b2c734e642889083819df22da57c>:0)
UnityEngine.ParticleSystem.GetParticles (UnityEngine.ParticleSystem+Particle[] particles) (at <7597b2c734e642889083819df22da57c>:0)
testing.Update () (at Assets/Scripts/testing.cs:66)

The declarations:

Code (CSharp):

1.     public class liquidHandler : MonoBehaviour
2. {
3.     public ParticleSystem H2O;
4.     public ParticleSystem Acid;
5.  
6.     private ParticleSystem.Particle[] H2OParticles;
7.     private ParticleSystem.Particle[] AcidParticles;

The erroring code:

Code (CSharp):

1. //Checks for H2O in flask
2.             int numH2OPart = H2O.GetParticles(H2OParticles);
3.             for (int i = 0; i < numH2OPart; i++)
4.             {
5.                 if ((RbPos - H2OParticles[i].position).x < toll &&
6.                  (RbPos - H2OParticles[i].position).y < toll && (RbPos
7.                   - H2OParticles[i].position).z < toll)
8.                 {
9.                     H2oInFlask = true;
10.                     Debug.Log(H2oInFlask);
11.                 }
12.             }
13.             //Checks for acid in flask
14.             int numAcidPart = H2O.GetParticles(AcidParticles); //Error here
15.             for (int i = 0; i < numAcidPart; i++)
16.             {
17.                 if ((RbPos - AcidParticles[i].position).x < toll &&
18.                 (RbPos - AcidParticles[i].position).y < toll && (RbPos
19.                  - AcidParticles[i].position).z < toll)
20.                 {
21.                     AcidInFlask = true;
22.                     Debug.Log(AcidInFlask);
23.                 }

Both liquids are in place in the inspector, any help is appreciated

 

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