It will find somewhere to get comfortable. It has a little foot and will move itself where it wants to go.
All it takes to grow your own phyto is some 2 liter plastic coke bottles, a light source on a timer, some saltwater, an air pump, airline tubing, check valve, gang valve(s), microalgae grow fertilizer, and a live phytoplankton culture. If you think about it, you will figure out how to put everything together. There are also many, many DIY links out there that will help if you do a Google search.
If you grow your own phyto, you can learn to culture your own other live foods, like rotifers and enriched brine shrimp. Feeding live foods is perhaps the absolute best nutrition you can give your fish and corals. If I had the space, I would be culturing my own live foods... which I intend to do when I get a bigger place.
Be careful with that liquid calcium. Calcium has to be added in equal parts with alkalinity, and will not be effective unless you also have high/stable magnesium levels as well. I highly suggest you read some threads that have to do with balancing calcium and alkalinity.