I advise that you use the search bar for this one. ADA Aquasoil will grow anything 1000x better than gravel. ADA AS provides steady nutrients to the plants for years, nutrients that help the plants thrive and prosper. Gravel is inert and provides no nutrients whatsoever to the plants. ADA AS is the best stuff on the market, your plants will thank you.
Generally gravel is not used at all for planted tanks as it does nothing. Go with the Aqua Soil, you won't regret it.
Suspended for 30 days for being terrible to other members