Hi all,
I've setup a new (well old tank tho) frag tank using the sand (half old half new), water and same model of power head ..etc from the existing one then I moved frags:
Few monti,
Few tiny Cluster coral frag (photo http://www.oceanarium.com.au/admin/photos/.CaC_200_IMGP2717.JPG),
2 clams,
1 Xenia frag,
3 tiny acro (their quality were not good already in LFS but was in my previous tank for near whole month).
few very tiny hermit crab
a torch corals
a birdnest (small, purchased last week )
Here is the spec of the tank
Water volume 31 L
Power head, hydor something, 2800L/HR. Not directly blow to the corals but slightly towards to the surface
Lighting - vertex (same light from old tank and I had this for almost a year without any problem with the corals).
Protein Skimmer (From the old tank)
Ca ~ 470 ppm
Kh 9-10
Mg ~ 1400 ppm
NO2 - 0.15ppm
NO3 ~ 0-5 ppm
PO4 ~ 0.4 (I know it is still high but let me explain below later)
Iron - 0, then I dosed 2 ml according to RedSea instruction
PH 8.4 last night (was 8.1-8.2 in last few days)
Don't have tester for Ammonia
Started using active carbon yesterday
Dosed Aquavirto Fuel twice a week with half dosing from the instruction
Also changed the salt from Auqavitro to Seachem.
I had my old tank for awhile and then I decided setup a new frag tank to free up some spaces. I went to overseas few months ago for few wks and of course you can expect what happened.. for those still survive at that time PO4 was 2.5 and then I change the water immediately as soon as I back.
3 of the green cluster corals (frag) still survive, saw 1 bleched this morning and I had this > 6 months. 2 of them are ok so far.
For few acros frag, apart from those RTN which I removed, I still have 2 looks healthy (I asked the LFS if they can give it to me as it is a small branches at the bottom so I cut and glued on the rock)
So far all the monti are ok
You may think my tank is new which may caused the problem. I broke my other frag tank last year so I moved all corals to a small container (glad that it was spring) use the same tank, Aquavitro salt, same light moved the corals back with no loss at all seriously. I also got purple algae within a month.
Just wonder do you guys know what happened to my tank?
Here is what I can think of:
The power head is too strong ? (it is on the left hand side glass but front, blow to the rear right corner with slightly a bit towards to surface)
Fine bubble from skimmer causing the problem
The salt causing the problem or
Some chemicals released by the corals which I dont know? I know I cant mix leather with acro only.
Hermit crab? but seems unlikely
NO2 too high?
Btw I dont feed the tank at all so far, the hermit crab just picking the food from the rocks
Any ideas? thanks
I've setup a new (well old tank tho) frag tank using the sand (half old half new), water and same model of power head ..etc from the existing one then I moved frags:
Few monti,
Few tiny Cluster coral frag (photo http://www.oceanarium.com.au/admin/photos/.CaC_200_IMGP2717.JPG),
2 clams,
1 Xenia frag,
3 tiny acro (their quality were not good already in LFS but was in my previous tank for near whole month).
few very tiny hermit crab
a torch corals
a birdnest (small, purchased last week )
Here is the spec of the tank
Water volume 31 L
Power head, hydor something, 2800L/HR. Not directly blow to the corals but slightly towards to the surface
Lighting - vertex (same light from old tank and I had this for almost a year without any problem with the corals).
Protein Skimmer (From the old tank)
Ca ~ 470 ppm
Kh 9-10
Mg ~ 1400 ppm
NO2 - 0.15ppm
NO3 ~ 0-5 ppm
PO4 ~ 0.4 (I know it is still high but let me explain below later)
Iron - 0, then I dosed 2 ml according to RedSea instruction
PH 8.4 last night (was 8.1-8.2 in last few days)
Don't have tester for Ammonia
Started using active carbon yesterday
Dosed Aquavirto Fuel twice a week with half dosing from the instruction
Also changed the salt from Auqavitro to Seachem.
I had my old tank for awhile and then I decided setup a new frag tank to free up some spaces. I went to overseas few months ago for few wks and of course you can expect what happened.. for those still survive at that time PO4 was 2.5 and then I change the water immediately as soon as I back.
3 of the green cluster corals (frag) still survive, saw 1 bleched this morning and I had this > 6 months. 2 of them are ok so far.
For few acros frag, apart from those RTN which I removed, I still have 2 looks healthy (I asked the LFS if they can give it to me as it is a small branches at the bottom so I cut and glued on the rock)
So far all the monti are ok
You may think my tank is new which may caused the problem. I broke my other frag tank last year so I moved all corals to a small container (glad that it was spring) use the same tank, Aquavitro salt, same light moved the corals back with no loss at all seriously. I also got purple algae within a month.
Just wonder do you guys know what happened to my tank?
Here is what I can think of:
The power head is too strong ? (it is on the left hand side glass but front, blow to the rear right corner with slightly a bit towards to surface)
Fine bubble from skimmer causing the problem
The salt causing the problem or
Some chemicals released by the corals which I dont know? I know I cant mix leather with acro only.
Hermit crab? but seems unlikely
NO2 too high?
Btw I dont feed the tank at all so far, the hermit crab just picking the food from the rocks
Any ideas? thanks