That's why I mixed mine with Estes black reef sand. It holds the plants in better. With just Ecocomplete, my plants tend to be more easily uprooted by my naughty fish
. However, the larger pieces do hold lots of beneficial bacteria. The fact that Ecocomplete is porous really helps with the good bacteria.
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75 gallon tank: gH 12 degrees, kH 4 degrees/ PC lighting - Coralife Lunar Deluxe fixture 4X65W (2 GE 55W 9325K bulbs, 2 55W EIKO 6500K bulbs)/ 1 Penguin 330 HOB filter, 1 Penguin 125 - bio wheels removed/ Pressurized CO2: tubing fed into input of a maxi-jet 400 power head, 4 bps