Feeding plan help (liquid life)

[Saltysteve]

So I just got turned onto these Liquid Life products, Bio-Plankton and Coral Plankton as well as Selcon. Along with this I have frozen rotifier, mysis shrimp, bryne shrimp, reef plus and some OSI flake food and of course some seaweed select sheets

Until now I have been dropping in one cap full of reef plus every other day. Every 3 days I would feed a cube of mysis shrimp and a small pinch of flake. For treats, reef plus mixed in with bryne shrimp and I would hang a piece of seaweed for the tang every other day.

How the heck am I going to add these new products without having algae blooms

I would imagine the Selcon would replace the reef plus? I was also thinking a guy/gal could alternate spot feeding Bio then Coral plankton or could they be used together?

Hair Algae here I come! (again)

PS
How serious is the expiry date on these products? The one new bottle I just bought is expired in 4 weeks
I dislike learning curves (sometimes)

Thanks
Steve