<a href=showthread.php?s=&postid=9480172#post9480172 target=_blank>Originally posted</a> by sjm817
Not sure I understand what you mean. Turn the skimmer around 180 so the pumps face the baffles? I can do that easily enough. I thought it would be better to have the pumps near the drains. Moving the fuge drain to the return section is not really something I want to do. Why would this matter?
Honestly, My ER skimmer worked very well in this same sump configuration and I dont see why the ATI shouldn't do the same.
I wish i have option to put the same size of your sump under my tank

(nice job you did there) .
first any skimmer you put in the sump the best way it's to position the pump as far as you can from the drain pipes.
in this area the water movement strong and drain with air and the performance of the pump (any pump ) will be lower then should be.
The ER skimmer work good but the different here it's the impeller (mesh) it's work different then (needle wheel) it's more sensitive (a lot more ) and even with the GEN X with the mesh impeller it's sensitive same as the SICCE . because of that the foam collapse more quick then a regular impeller , now when the skimmer pumps sit near to the drain area pipe the foam will collaps even not in feeding time but not all way down half and build up again this will cause less skimming performance in the collection cup.
you can keep the fuge drain as is if you want but i suggest to you to put a baffle after those tower because 2 reason (i wish i could do it in my sump) :
1. the food that drain thru the pipe will stay in this area and in the end more clean water will return back to the system (the skimmer can't catch all the detritus )
2. the water movement in this area strong even if it's look calm (i don't know what pump size return the water to the tank , but even 1200GPH pump with 2 drain in the same place will creat strong water movement) and if you will make it more gentle to the skimmer area (or pump ) the performance will be better and in smaller place the skimmer will handle with the water and kill the protien better.
i also suggest to take of the elbow from the skimmer and let the water drain direct from the T line for better performance with this skimmer , the best way it's to find the correct water level for it since you don't have problem with noise of splash water.
you also need to know that if the skimmer clean in the past month your system the skimming result will reduce since the water crystal clear and there is not much to skim (because of that i add more 4 fish to my system and want to add more) .
i hope you will get better performance because i have the same skimmer as you in the past and the result can't compare and i was little confuse when i read that you have the same result with the ER .
best regards
michael