---
title: "Hi everyone, had a pretty bad fungus gnat problem recently I have…"
description: "Hi everyone, had a pretty bad fungus gnat problem recently I have done 2 mosquito bits treatments and read somewhere that if you put about a half inch layer of…"
url: "https://getplanta.com/community/lKxUkhzRR_aIJD7o1QvtwQ/Vd2D2QMKQUazb3xDVsU8zg?language=ja"
community: "Pests, diseases and problems"
author: "Jack_R"
published: "2024-07-08T02:00:54.537918Z"
language: "en"
image: "https://images.getplanta.com/v1/resize/rSwvJZ4eNlWWNeDYLEjv_ikXRBLWnAKU4la1k_anTvA/bT7pg_sqQhGNTCuXboukKA.webp?size=large"
---

[コミュニティ](https://getplanta.com/community.md?language=ja) / [Pests, diseases and problems](https://getplanta.com/community/lKxUkhzRR_aIJD7o1QvtwQ.md?language=ja)

# Hi everyone, had a pretty bad fungus gnat problem recently I have…

_Jack\_Rさんが2024-07-08に投稿しました_

Hi everyone, had a pretty bad fungus gnat problem recently I have done 2 mosquito bits treatments and read somewhere that if you put about a half inch layer of sand over the medium that can help to prevent adult gnats from being able to lay new eggs in the soil and newly hatched eggs to be able to escape. The sand combined with the mosquito bits seems to have worked extremely well but while using my moisture meter the couple plants I have put sand on top have much higher soil moisture level. Is the sand preventing the soil from being able to aerate and dry out naturally? Trying to avoid root rot here. Thanks so much in advance

![1件中1件目の添付ファイル](https://images.getplanta.com/v1/resize/rSwvJZ4eNlWWNeDYLEjv_ikXRBLWnAKU4la1k_anTvA/bT7pg_sqQhGNTCuXboukKA.webp?size=large)

## 4件のコメント

### Mossy-pawsさんが2024-07-08にコメントしました

You could poke holes in the sand? I’m not a plant expert but maybe

### send\_nodesさんが2024-07-08にコメントしました

Yes the sand can definitely hold in moisture, so good idea using the moisture meter :)  
How long after watering is the soil staying wet?

#### Jack\_Rさんが2024-07-08に返信しました

It’s only been a week

### Dave\_opuntiafaceさんが2024-07-08にコメントしました

The sand looks very fine, which will hold the moisture, yes.

---

_Plantaコミュニティ (https://getplanta.com)。閲覧はどなたでも可能です。投稿、コメント、いいねをするには、Plantaアプリをダウンロードしてください: https://getplanta.com/download_