You do have very good points with RO/DI, Its certainly is not easy to figure out if you can get away with it or not. must agree there would be much easier/safer for the OP to use RO/DI.
Mind sharing some knowledge on what you used when you ran no skimmer? I am looking into many of these methods now as skimmers have very ups and downs imo.
Ever heard of the DIY plastic bottle protein skimmer? I tried and this thing works great here a pic, super cheap too.
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