Hi reefer-wanna-be,
1) If you see no result, then you probably ARE wasting your money. This is probably not the product's fault --corallines need more than just available calcium, and they are suppressed by far more than a 'lack' of calcium!
2) I'll let others talk about
electrical lighting.
3) I'd suggest the more colorful gobies, but then maybe their too stationary for you
4) A white anemone is in all likelihood 'bleached', that is to say that it has lost its zooxanthellae. Without symbiotic zooxanthellae to produce starches and sugars via photosynthesis, the anemone has little source of nutrition save by ingesting food. Your anemone's refusal to accept such food can mean that:
a) the portions are too large
b) the food isn't fresh enough
c) the anemone is so starved it has begun digesting its own tissue, starting with the gut tissue it needs to digest any food!
You need to light that animal properly. If it can recruit the appropriate dinoflagellates (the zooxanthellae) from the water, it will turn dirty (eventually even) tan. From the nutrition it gathers thence, it can rebuild both tissue and a healthier appetite for offered foods.
Once the animal was expanding properly, and hogging the light, I'd start with very fresh shrimp bits, the size of a pinhead, and NOT coax the animal to ingest it, just letting it fall on the tentacles near the mouth: ingestion can take minutes.
5) The amount of food you're putting into the tank may be a greater concern than the amount of light, as far as
coralline algae are concerned.
Heightened nutrient levels encourage all manner of algal and bacterial films to get a leg up on the corallines you prefer.
In the wild, coralline algae is found even in very poor light, and they are aided by low nutrient levels and especially a horde of herbivores to ensure their dominance. Corallines are well armored against most herbivores, so naturally they keep on growing while their algal rivals get mowed down by snails, fish, certain urchins, etc.
Lastly, you need corallines to get corallines. Training water current on a piece of LR with coralline growth on it can potentially spread coralline spores throughtout the tank.
Let's be clear. There is a big difference between feeding a tank and overfeeding a tank. Only the reactions/appetites of your tank inhabitants will help you judge
hth,
dh
