Reducing Skimmate

[Oscar]

I am generating about one cup of green tea skimmate every 2 days. My bioload is limited to 2 clowns, a light CUC and a light amount of corals.

I would like to thicken up the skimmate so that I lose less salt water and dump the cup less often. What adjustments do you suggest? The skimmer came with the tank and does not have any manufacturers markings. It sort of looks like a EuroReef knock off.

Alternatively can I drain the cup into a larger jug for emptying once a week? Is it as simple as drilling a hole in the cup and adding a section of hose into the jug?
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Also I now have quite a buildup of algae inside the main skimmer canister. Will this lead to any performance issues?