SAND or GRAVEL? Testing Freshwater Aquarium Substrates

Curious whether sand or gravel is better for your freshwater aquarium? In this video, we test five popular aquarium substrate combinations over two weeks to compare their effects on water quality, clarity, and overall performance.

We walk through the full setup, track changes in nitrite, nitrate, and pH, and offer observations about beginner aquplant growth and more.

Whether you're starting a new tank or upgrading your substrate, this aquarium substrate test will help you decide what's best for your fish and plants.

00:00 Introduction
00:37 Substrate Setup
02:36 Plant Choices
04:14 Animal Choices
04:38 Experiment Overview at the Start
05:07 Results After One Week
07:03 Water Testing After One Week
08:34 Results After Two Weeks and Final Thoughts

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