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im sorry but that DIY overflow with all the pvc is horrible to look at, unless you are Sanford and son. if you dont want to drill your tank, the CPR overflow works fine with the aqua lifter. i used one for years. but now i do nothing have RR tanks. and if you dont want to use a aqualifter yu can simply use a powerhead although it will spit air in your tank no and then. the real solution is drilling the tank, anything else is just a band aid.
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