Phosguard = Dead Corals

bridge man

Member
My torches, frogspawn, and hammer are all beginning to peel away from their branches and not inflating much at all. Once I noticed this happening, I pulled them out of the main tank and put them into my 10 gal. QT with a cheapo 18" flo. light strip.
There are three possible answers to this problem:
1) Last week I added Phosguard in a media bag in the sump to combat silicates. I am also running my RO water through Phosguard before topping off with it through a Nilsen Reactor.
2) I added some calurpa (feather I believe) to my refugium on the same day as I added the Phosguard. Maybe the corals don't like the new algae?
3) I came home a little over a week ago to find my galaxae upside down in the sand after being pushed off the rocks, probably by an emerald crab/turbo snail. It has began to die, so that could be a source of some toxins. I pulled it out also and put it in the QT with the others.
Either the Phosguard, macro algae, or the galaxae could be the source of all my trouble. Seems funny that only the corals of that family are affected. Any suggestions would much appreciated.
And of course: Amm-trite-trate=0, pH~8.3(+/-), calcium=400, alk~2.5-3.0, phosphate=0, silicate=0 (undetectable in tank and RO water after passing through Phosguard)
 

salty rick

Member
I can't see the phosguard causing the problem. I use it all of the time and have not had any problems with the coral.
What is your temp. and salinity level? Aslo, what is your lighting on the tank?
 

bridge man

Member
The galaxae was not close to any other corals, so there was no chance of stinging the other corals. I just thought that maybe it dieing could have done something to the others.
The tank is 8 months old, so the cylce is long over with, and the trates are at zero due to no trates going in with top off water, feeding everyother day, live rock and a DSB in the main tank and refugium.
The temp runs about 77-79, depending on how cold it gets in the house. I don't think this could be a problem since the affected corals were healthy for a few months at this temp range. Salinity runs about 1.023. Lighting consists of 2-250W MH 6500K saki's plus 2-110W VHO actinic. VHO for 10hrs, MH for 8hrs.
I'll check all the levels again tonight just to be sure.
Thanks
 
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