![Anyone know when my sand is turning grey? I figured it had somthing to do with my rocks that I have in the tank, : r/PlantedTank Anyone know when my sand is turning grey? I figured it had somthing to do with my rocks that I have in the tank, : r/PlantedTank](https://i.redd.it/6txxdbovmgf31.jpg)
Anyone know when my sand is turning grey? I figured it had somthing to do with my rocks that I have in the tank, : r/PlantedTank
![Amazon.com : NSC Aquarium Sand | Craft Sand | Natural Fine Sand | Decorative Sand | Perfect for Interior Decor Vase Filler Aquarium : Pet Supplies Amazon.com : NSC Aquarium Sand | Craft Sand | Natural Fine Sand | Decorative Sand | Perfect for Interior Decor Vase Filler Aquarium : Pet Supplies](https://m.media-amazon.com/images/I/81gnKCVfqJS._AC_UF350,350_QL80_.jpg)
Amazon.com : NSC Aquarium Sand | Craft Sand | Natural Fine Sand | Decorative Sand | Perfect for Interior Decor Vase Filler Aquarium : Pet Supplies
![This grey dirt stuff keeps appearing in my light sand and I don't know what it is. I cleaned my tank a few hours ago and it is already all back. Help? : This grey dirt stuff keeps appearing in my light sand and I don't know what it is. I cleaned my tank a few hours ago and it is already all back. Help? :](https://i.redd.it/kdam6utuozf41.jpg)
This grey dirt stuff keeps appearing in my light sand and I don't know what it is. I cleaned my tank a few hours ago and it is already all back. Help? :
![3D Grey rock background in 75 gallon aquarium | Tropical fish aquarium, African cichlid aquarium, Aquarium sand 3D Grey rock background in 75 gallon aquarium | Tropical fish aquarium, African cichlid aquarium, Aquarium sand](https://i.pinimg.com/736x/81/c8/76/81c876ec4332e9b97deb8e444f0de11f---gallon-aquarium-diy-aquarium.jpg)
3D Grey rock background in 75 gallon aquarium | Tropical fish aquarium, African cichlid aquarium, Aquarium sand
![LAFGUR Aquarium Gravel,Fish Tank Gravel,Natural Mini Stone Sand Gravel Landscaping Decoration For Fish Tank Aquarium Flowerpot Water Seawater DIY Accessories - Walmart.com LAFGUR Aquarium Gravel,Fish Tank Gravel,Natural Mini Stone Sand Gravel Landscaping Decoration For Fish Tank Aquarium Flowerpot Water Seawater DIY Accessories - Walmart.com](https://i5.walmartimages.com/asr/d8312d95-40cd-47b9-b436-ad4b9815699d.97a0e6c3b4ff7ea84527f09c4ad80277.jpeg)