Be careful to not over-feed. All that micro-sized food is extremely easy to overdose. Best to figure a way to consistently dose the product in question, than say, take a chunk here and a chunk there.
You can feed as often as you would like... but excessive nutrients will quickly turn up as nuisance algae in your tank. I find the 'stuff' lags my 'over-feeding' by about 2-3 days.
To put some easy numbers in place, try feeding once a week, and see how the tank reacts. If all's well after a month, jump it up to twice a week... I would not feed Cyclopeeze or the like to my own tank more than once a day, unless I had a specific reason (Dendronepthea, young fish, etc.)
- Mac