Learn what to add to the bottom of your planter to promote aeration without adding weight or expense — plus some things to avoid (including gravel!).
JOFAMY 6 inch Planter Pots, 5-Pack Self Watering Planters for Indoor Outdoor Plants, Plastic Plant Pots Set with Drainage Hole, Decorative White Flower Pots for All House, Garden Plants
10 Best Materials For Indoor Planter Drainage – Braid & Wood
How to Get the Best Drainage for Your Container - Why What You've Been Taught is all Wrong
Help! Which (smaller) pot should I put my calathea rattlesnake in? More info in comments. : r/houseplants
What can you use for outdoor planters? - Quora
What can you put in a large planter to minimize the amount of soil you
Ways to Improve Drainage for Plant Pots - The Home Depot
trees - How to prevent water at the bottom of a large ceramic indoor container for a Norfolk Island Pine? - Gardening & Landscaping Stack Exchange
27 Best Ways to Fill The Bottom of a Large Planter - Single Girl's DIY
Why bottom watering is NOT the best way to water your plants - Our Green Sanctuary