I'm late to this, but here's my bit: Fired clay is more or less inert, but it has a high cation exchange capacity. In other words, in your substrate, it won't give you iron, but it takes things out of the water column and transfers it to the plants. It also is good for bacterial media in a filter.
You can reuse the pots for fish shelter? Crush them further and use them as gravel? Or find some non-aquatic uses.
"Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing it is stupid." - Einstein
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
~~~ 15g rimless (coming soon) ~~~ 20g rimless (coming soon)