Ok so I got a little problem and wondering what you all think is best way to go about it. So I have a 40g NUVO all in one with the built in sump in the back of tank. It allows for one return pump in the middle and the far ends has room for a sock or a basket which you can have filter and carbon etc in, or a protein skimmer etc... So til recently I ran protein skimmer on one side and basket on the other with floss on the top and carbon/gfo in the middle... Then I had a cyano problem and seemed to fix it with the purchase of a UV Filter which replaced the basket and I would just lay the carbon back in the middle chamber above the return pump which felt not as neat and also not sure if was getting as much water flow through it ... anyways, I got everything goin nicely and took out the uv filter so I could put the basket with carbon/gfo back in and now the tank doesnt seem like it's doing as well, Im about to put the UV Filter back in and see if that improves but do you guys have any suggestions for what I should go with as a standard. Just seems like with a protein skimmer and uv filter on the sides where the over flow goes I dont have anything to catch stuff really and prvent the coluns from accumulating lots of debris and junk... Hope this makes sense. Thanks for any advice!