i have seen that overflow but i really want the CPR one. i just finished glue the glass in my sump/ refug . to help reduce the micro bubbles from the skimmer. right now i have just a 10gl above tank refug which i didnt do that good so only like a 2.5 refug ( my first one ) work great, but want to remove the skimmer . 20 L with over- under baffles and a spot (like 8gl) for my replacement refuge.
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