Join Date: Jul 2013
Location: West Bloomfield, MI
The benefits of using ADA soil are wonderful, and I use it in just about every tank I have. It is designed to be used as a top layer, with ADA's Power Sand as the bottom substrate. I wouldn't have a problem layering the ECO complete for a few reasons. The ECO complete since its been cycled in your existing isn't a bad idea as a bottom layer, because it will presumably have beneficial bacteria for the revamped tank. I would do a gentle rinse in tank water to clean it up a bit and filter out pesky snails. You might also consider conserving how you place the ADA soil. If you work the ADA soil around the rocks, wood, etc, specifically placing in the grow areas, you save soil. The areas where you are missing soil, you supplement with rocks, small pebbles, etc. for covering over the ECO complete. I place hard foam or egg trays in the rear of my tanks to help build a shelf of substrate, which would otherwise be wasted space in the rear.