Hey just reading through your forums nice place here and all seen helpfull. Right i have a Marine Fish Tank setup, been up and running for 2 weeks now, First things first. I brought the tank of my mate in tank pump, Aqua Pro 2 pump lights and all other stuff, i have added new sand, new water, added salt the first couple of days the water was cloudy but my mate said this is OK and normal and it will clear within a couple more days, the water cleared so its now been a week. Went down the local pet shop and ask them for advise to speed things up a little, He gave me some sand and a bag of water from his tanks, 2 days later i brought some live rock's from him, everything is fine this is now 10 days everything still fine i brought a couple of turbo snails 2 days later the sand started going brown , this i worried about but contacted the pet shop and he said this is fine , OK , now on the 13th day my water started going a greeny brown colour it was disturbing and did not look right , on the 14th day i woke up to go to work this greeny brown colour in my water was getting worse so i cleaned my in tank pump filters , that night i got home from work and it was worser than ever i tryed to contact the local pet shop but they are shut today, i have done all my nitrate's testing ph lever and ammonia and salt water testing nearly every day all say fine except the nitrate level witch is high but the pet shop said thats normal. Can anyone help me to solve this problem I'm worried ill have to start over as anyone had this problem if so please help me asap because i want to set this right or if i have to wait let me know about the process thx.