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Here is a pic of my plate coral which I have had for about 3 months. As you can see clumps of the surface tissue are coming away for no reason. The water quality is good and there does not seem to be an other problems with any of my other corals. Does anybody know what might be causing it and if...

Last weekend I put in a new white, pink tipped, plate coral. For the first few days everything was great, but then yesterday as I walked past the tank I saw it shrivel up to almost nothing. Within an hour it was coming back to normal and then it went again. Since then it has returned to some...

I put in a new pulse coral about 3 days ago and on the face of it it looks very healthy. It grows very nicely during the day (lights on), and retracts during the night. The only problem is that it does not pulse. It is near the top of the tank in relatively good flow. All water paramters are...

First disaster since starting up 5 months ago happened today. I came home from work and noticed a very strong hydrogen sulphide smell (rotten eggs). I thought tha this could only be my Aqua Medic Denitrifier, so while having a look at the equipment to see what the porblem was I noticed a kink in...

My Yellow Tang is starting to loose his colour and go a bit pale. He is still active, alert and feeding well. He is fed Brine Shrimp, home made food, and flake on rotation. The tank also has a regualr supplier of sea weed which he munches down without a secnd thought. So no obvious reasons...

I have a couple of feather dusters that need moving, but they are firmly anchored to a rock. I don't want to pull them off for fear of damaging them, so what's the best way to move them. Cheers Pioneer

I have just noticed one of my turbo snails sitting right in the middle of my new green polyp coral. I took him off and it looks like he was sucking the life out of a couple of the stems. Are these species not good together in a tank? My LFS did not mention it when I got the polyp (and he knew I...

I am about to do a 10% water change and my mushroom coral is going to be out of the water for a few minutes until the new water is added. Will this be a problem as I am reluctant to move him deeper into the tank? Thanks Pioneer

Can anybody tell me the name of this coral, or more interestingly what is growing out of the top of it. Cheers Pioneer

I have a 55 gallon tank with 1 x 2 inch yellow tang, 1 x 2inch clown, 1 x 2.5 inch midas blenny, 1 x 2 inch sand shifting goby, 1 x 0.5 inch yellow flame angel, 6 x turbo snails, 2 x sand shifting stars, and 1 x small red star, and a feather duster. There is 20Kgs of LR with a 3 inch thick CC...

I want to put in my tank some Phosphate absorber. The PO4 level is not high but I want to make sure it stays that way. My external filter is too full with other media to put it in. Is there any reason why I cannot put it in the outflow box of my skimmer. The PO4 absorber is the Rowa Phos which...

I have recently taken the step from FW to Marine and have got the following setup. A 125 litre tank with Eheim Ext filter, Aqau Medic 1000 protein skimmer and Aqua Medic 400 Nitrate reductor. The tank was setup about 5 weeks ago with just salt water (SG1025) and the skimmer. The temperature has...