Have been keeping fish of some sort or another for about 20 years or so, have now gone back to marine its by far the most challenging and the most amount of fun. the tank I've got now has been up and running for about a year with reasonable success, then about 2 months ago I put the bit between my teeth and started using NSW from my local beach with stunning success. Was just wondering if anyone out there was doing the same. After bringing to temperature it goes straight in no dark room no filtering nothing. would be interested to hear back... Thanks guys... nigwell Bournemouth..