White fuzz on leaf veins and undersides could be mealybugs or fungus. "Tiny dots" on top are vague. A photo is needed to identify the plant (Alocasia/Colocasia) and the problem accurately.
Mandarin Tree: Sooty Mold and Insect Complex in Australia
Staghorn Fern Damaged by Scrubbing: Will It Survive?
Identifying White Fungus vs. Mealybugs on Indoor Plants
Tiny White Mites Under Furniture? Probably Not Spider Mites
Crassula (Jade Plant) Pests: Mealybugs, Aphids, or Scale?
Asparagus White Sticky Substance: Need Photo
White Birch Decline After Spring Pruning: Sap Flow and Bacterial Wetwood
Bamboo Mites: Atomic Grow Recommended for Plant Health Approach
Southern Blight in Vegetable Gardens: White Rubbery Soil Fungus
Controlling White Scale on Sago Palms: Oils, Soaps, and Systemics
Evergreen Bush Cottony Aphids: Systemic Insecticide
Bright White Fungus in Soil: What It Is and How to Manage It
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