Seriatopora problem! Help !!

[batukhan]

Hi Guys;

I have added three Seriatoporas to my tank approx. 3 weeks ago. 1 pink hystrix, 1 yellow hystrix and a guttatus.

It was all good in the very beginning but then i noticed significant colour loss. And now hystrix s are pale brown and they have some tissue loss at their bases. I also noticed a little spot in one of the central branches of pink hystrix. They had almost no polyp extension but today that seems to be better.

With guttatus i noticed around 2 mm growth on one of the branches that i ve been following since 3 weeks. However; guttatus has normal polyp extension except the tips. The tips have poor extension and i also noticed some tissue receding at its base...

Montipora digitata and stellata are doing well...

I told this to a local friend whom i bought the corals from. He suggested that those amounts of nitrates would not cause that rapid colour loss and he told me that it might be Potassium deficiency... And i do not have the test for it...


Nitrate: 10-15 ppm , Phosphate: undetectable.

Any ideas ?

Regards from Istanbul, Turkey


Batu

 

[LoJack]

The nitrates are definitely high. I'd work on getting them down.

With Seriatorpora's in my experience, keep up the water quality and let them be. If your other corals are doing good, don't go changing your chemistry because you see a reaction in your birds nests. They tend to do this.

I've had a few colonies that sit stagnant when newly introduced, or look bad, or just maintain for months … and then boom, they color up and start growing.

Work on consistency and water quality and they'll come around. You definitely want to get those nitrates down. And as for the potassium, if your other corals aren't pale or bland looking, do you think you should starting adding stuff to your tank?

 

[batukhan]

I see that is good news then. I just do not want them to die. I got a bit panicked when i saw the tissue lost from the base. Also the table acropora doesn't seem very happy . Sometimes i see 2-3 cm long strings around its tips. I m not sure if it is also dying... And it has less blue on its tips than before. The friend that i bought the seriatoporas told me that he doses potassium and that maybe my levels are extremely low and these corals reacting to this...

For the 10 ppm nitrates, what would you suggest? Biopellets ? I have a reactor that i am not using currently.

 

[Constrictor6090]

Could try dosing some iodine to help with the tissue