the idea of ozone generators sounds brilliant but what is it like on electricity bills etc is it worth having on my 128L tank? ive been looking at this one http
/cgi.ebay.co.uk/AQUA-DIGITAL-OZONE-G...id=p3286.c0.m14
/cgi.ebay.co.uk/AQUA-DIGITAL-OZONE-G...id=p3286.c0.m14
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