I need help bad!!! For the last 2 months I've been battling what I believe is Diatom algae (pictures below). I can't seem to make it go away. Up until the last couple of weeks my coral has still been happy and growing, but now they seem unhealthy and some have even bleached and died. The corals I have lost are a green slimer, bubble coral, a favia, and two chalices. Some corals that seem unhealthy are all 3 of my frog spawns (pictured), my torch coral (pictured), and my monticaps. The frog spawns and torch coral do not open up all the way and the monticaps have started bleaching. They have been this way for a week. However my maxima clam, inverts, and fish all all doing fine. I need help getting rid of this. Does anyone know whats wrong with my tank? Below is a complete live stock list of my tank and all the information about the water and set up. I'll try and give as much info as possible.
Fish: Hippo tang, yellow tang,2 orcelaris clowns, dragonet mandrin, 2 chromis
Inverts: 8 blue leg hermits, 5 red leg, 10 astrea snails, 1 serpent star, 1 emerald crab, 1 maxima clam
Coral: 3 frogspawn, 2 monticaps, 1 hammer coral, several zoa's, one brain coral, one acan, mushroom coral, one birdsnest, 1 torch, one leather toadstool.
System: 75 gallon tank with a 29 gallon sump/ refugium, protein skimmer, 2 powerheads, 110lbs of live rock, 120lbs live sand
Lighting: Light fixture with 2x 150watt MH, 4x 65watt PC act.
Dosing: purple up when calcium is needed and kent phbuff for alk.
Water Quality:
Calcium- 425
Phosphate: .1 ppm
pH: 8.4
Nitrate: 0ppm
Nitrite:0ppm
Ammonia: 0ppm
Salinity: 1.023
Water temp: constant at 80*F
Things I've tried:
Vacuuming it out, many times
3, 15% water changes
20% water change and adding the 29g sump
Does anyone know what could be killing my corals and causing the diatom algae?? How can I get rid of the diatom algae?? Is there a liquid additive that will kill diatoms that is reef safe??
Any help will be greatly appreciated!
http://s1227.photobucket.com/albums...rriskent/?action=view¤t=0423111719a.jpg
http://s1227.photobucket.com/albums...rriskent/?action=view¤t=04231117191.jpg
Fish: Hippo tang, yellow tang,2 orcelaris clowns, dragonet mandrin, 2 chromis
Inverts: 8 blue leg hermits, 5 red leg, 10 astrea snails, 1 serpent star, 1 emerald crab, 1 maxima clam
Coral: 3 frogspawn, 2 monticaps, 1 hammer coral, several zoa's, one brain coral, one acan, mushroom coral, one birdsnest, 1 torch, one leather toadstool.
System: 75 gallon tank with a 29 gallon sump/ refugium, protein skimmer, 2 powerheads, 110lbs of live rock, 120lbs live sand
Lighting: Light fixture with 2x 150watt MH, 4x 65watt PC act.
Dosing: purple up when calcium is needed and kent phbuff for alk.
Water Quality:
Calcium- 425
Phosphate: .1 ppm
pH: 8.4
Nitrate: 0ppm
Nitrite:0ppm
Ammonia: 0ppm
Salinity: 1.023
Water temp: constant at 80*F
Things I've tried:
Vacuuming it out, many times
3, 15% water changes
20% water change and adding the 29g sump
Does anyone know what could be killing my corals and causing the diatom algae?? How can I get rid of the diatom algae?? Is there a liquid additive that will kill diatoms that is reef safe??
Any help will be greatly appreciated!
http://s1227.photobucket.com/albums...rriskent/?action=view¤t=0423111719a.jpg
http://s1227.photobucket.com/albums...rriskent/?action=view¤t=04231117191.jpg