Cool thanks again brent. but one of the original pumps would be enough to get the flow up for the skimmer right? and the canister just has to have the in line before the skimmer? so behind the comb would be fine where the sponge fiilter was? ant the out after the skimmer and befor the baffles?

Would diagrams or photos help you to understand sumps better?

i think i get it for the most part its the concept i dont get . is a sump basically another tank that is there to make water changes easier, and somewhere to put insightly things like skimmers heaters. and what the thing with micro algae? people still keep fish and inverts in ther esumps do they not?

Not sure how best to plumb in a canister. Check that link I sent you for ideas on where to run the lines. They figured out where to put them wthout having to do any cutting of the tank and so that the microbubble problem is fixed.

The problem I see with placing the line to the canister to the right of the skimmer (behind the overflow grate) is wouldn't the skimmer get in the way of the lines? You might be able to make it work with some cutting.

Regarding the original pumps, I'd leave both in. they are small pumps and having two gives a better mix to the flow. Also, if you remove the pump you need to plug the hole through the smoked glass

i have as you can see from some off my pics added two korialia PHs a nano and 1 for flow . i have run the cors out the back under the small hood. i was thinking of cutting a small u shaped hole from the back for the hose.

i hope you get the idea. i am talking about the small hood over the skimmer.

That would probably work. I forget where there is space around the skimmer since mine was never placed in the tank.

A sump is for additional water volume, which promotes additional stability in the system. Its also a great place, like you mentioned, to hide extra equipment. As for macro algae most people put that in a refugium, which is ment to promote pod growth, and use the algae for nutrient export.