Ora-glo is made by ORA, great stuff. When feeding fish you should always have a variety. Clownfish are Omnivores so will benefit from meaty and algae based foods. Frozen or fresh foods from the grocers have higher values of nutrition than dry or flake foods. They are ok occasionally, but I would'nt use them as a staple.
here are the foods my Oscellaris love:
Frozen:
Piscine brand mysis shrimp
Ocean Nutrition formulas..prime reef, brine shrimp plus, formula 1&2, spirulina,clam
Cyclop-eeze
krill
H2O rotifers
In a jar which should be refridgerated after opening~ Sweetwater zooplankton
fresh items: shrimp, squid, scallop, clam
I also add Kent Zoe and Selcon and occasionally some garlic extreme to their food for added vitamins, amino acids, and to boost the immune system.
Another good dry item your fish might like is Ocean Nutrtion's flake or Spectrum Thera-A pellets.