Still no sign of spaghetti worms. So, I ordered GCE's refugium pack, which includes two pounds of live sand and an assortment of macros. I'm hoping their sand has those little, orange wrigglers. Adding more sand to the DSB is good. I need to replace sand that gets removed through maintenance and dissolution.
The more sand sources, the more diversity. This is what I meant with building the ecosystem from the ground up. How does nature process the constant settling of detritus? Detrivores. The more diverse your detrivore community is, the better equipped it is to handle a wide variety of input. They process all this stuff down to food for the plants. I had a huge buildup of detritus resulting from hypo salinity treatment. Spaghetti worms and other detrivores perished. Snails and pods survived.
Understanding how everything is connected, through the food chain, we can pick and choose not just the fish and plants, but the whole cast of thousands, who support the rest of the ecosystem. Complicated? Lucky for us, live sand and rock is readily available, to seed our little communities. Some critters brought in with them will die, and some will survive and reproduce. The survivors are the ones that 'belong', and take their place as valuable members of a diverse ecosystem.
Certain creatures in nature have to be avoided in the confines of an aquarium. Why? Because they pray on players more valuable to the system than themselves. For example, I wouldn't keep sand-sifting fish or sea stars in my tank, because I want my sand dwelling detrivores at maximum capacity. I added peppermint shrimps to control aiptasias. They seemed to work, but once they ran out, they went after my precious spaghetti worms! The shrimps were removed.
It's not always easy, but it's best not to get too attached to ANY organism in our tanks. No one organism is more important than the whole system's health. Once you realize there's a problem, you need to act fast, because one wrong cast member can quickly devastate living components of a finely balanced ecosystem. The space limitations of aquariums compounds the problem.
This is why it's so tricky for me to pick fish. They have to perform in a way that benefits the ecosystem. Right now, in this transitional phase, the mollies have been invaluable. But once I'm convinced that algae is no longer a threat, I'll remove them. I've kept a variety of 'temps' to perform special services.
So there is no rush to add fish. First, I need to get my cast of thousands ready for the big show. A proper sand bed community is like a wall (or floor), of mouths. And the more mouths and variety of mouths, the better!