I have an older CS 6-2 w/a Sedra KSP 3500 pump running on a 90gal w/medium bioload.

Euroreef's support team recommended an upgrade kit they sell which converts the skimmer to a recirculating model. It comes w/Sedra 5000, plumbing, and drill bits for $300.

Anyone ever tried this before. I'm a little leary about drilling the curved acrylic.

I was also thinking maybe just go w/the upgraded pump (Sedra 5000). Would I see any improved performance between that and my current Sedra 3500?

Or, should I save my $$ and get a Deltec APF600?

Any suggestions are appreciated.