I've joined a new group on Facebook for UK aquarium and tropical fish owners. They have some errr unique ideas. Here's one of the more out there ones … : r/aquarium
Amazon.com : Fonowx Cat Litter Spoon Litter Scooper, Substrate Spoon Sifting Long Handle Cat Litter Tray Pet Sifter Scooper, for Aquarium Lizards Hamster Dogs, 3.8mmx3.8mm : Pet Supplies
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My 20g 2 months in with DIY CO2, lighting and cat litter substrate : r/PlantedTank
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AQUEON Plant & Shrimp Aquarium Substrate, 5-lb bag - Chewy.com