---
title: "How does one deal with mold buildup on leca? Can u prevent it , is it…"
description: "How does one deal with mold buildup on leca? Can u prevent it , is it harmful ,,help"
url: "https://getplanta.com/community/Bj97ko_SSEaaIq6YAweltQ/SLxsDUtPQxqQ8gF1-gNVGg"
community: "Hydroponics & Semi-hydroponics"
author: "Planta member"
published: "2024-05-20T19:15:53.920287Z"
language: "en"
image: "https://images.getplanta.com/v2/cloudinary/global_data/communities/lgmqkipx5b7o9dzx6wzd.jpg"
---

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# How does one deal with mold buildup on leca? Can u prevent it , is it…

_Posted by Planta member on 2024-05-20_

How does one deal with mold buildup on leca? Can u prevent it , is it harmful ,,help

## 5 comments

### Nani commented on 2024-05-23

Ohhh I have the same question!!

### FriendofVeg commented on 2024-06-14

Are you sure it’s mold? If you’re using tap water you will often see mineral buildup.

### ToPlantHarmony commented on 2024-06-22

Is it green? It may be algae. I just wash the container and wipe it out whenever I repot that plant, and rinse the leca.

You can also make sure your reservoir is inside a darker pot to limit algae build up.

### Simone commented on 2024-07-12

Once a week I add a cap of hydrogen peroxide in the water of my aerogardens to help to kill bacteria. And wipe algie with clorox wipes

#### Nicole replied on 2024-08-02

Agreed! I also spray the inside of the pot when I clean it out and put fresh water in.

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