I have a low stand on my 320. I trimmed the alpha 300 skimmer cup by 1”. I didn’t notice anything in performance. Since then I removed the alpha and went with a octo 200int. It’s much smaller. You’ll figure it out. It’s a process. Can’t wait to see it filled.@JVU And @richiev both valid point and thank you.
I can remove the bottom board to slide the reefmat out but still wont be able to squeezr in a skimmer.
Time to look for a different sump. It'd been a year no rush. Besides i have more experience cutting acrylic to size and a better idea to place the baffles.