Size of Gravel

[Jorel]

What's the ideal size for a planted aquaium? Is 3/8" too big?

[Sumpin'fishy]

Generally, 2 - 3mm is perfect. Anything can work, but if too small, it compacts, too large and the roots can't get a good purchase. I would be happy with anything around 1/8" or so.

[carpguy]

3/8" is very big.

I have coarse sand mixed with laterite and topped with a litle gravel. It works well for the most part but I still sometimes have trouble getting plants to stay put.

[125gJoe]

Flourite and Onyx Sand (not gravel), seems to be just right - in my opinion...

I don't like the look of large gravel, and think it makes some tanks look smaller. Fine sand is too small for most planted aquariums.