I have a normal 3 compartment 10 gallon sump for my 40g. Refugium with eBay grow light in the middle. I harvested for a lil while then slowly stopped because my system stabilized and been stable since. I dose copepods in the refugium from time to time and it’s full of amphipods already (copepods population might be gone in there), I also transfer bristle worms into there and it’s now full of em. I’m kind of using it as a living mechanical filter now, and to achieve higher PH, while keeping pods population good for display and mandarin. What do y’all think? Thoughts about scrapping it or keeping it? Or ways to improve it?