SPS that it calcifies badly

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Dear all

sorry for my english.

I have problems with a sps. This coral calcifies badly on the tips.

They are formed more of the tips large than CA, type of the littles ball, than to the contact with the hand they are crumbled.

I have 1 bulb of 400W radium and 2 t5 attinic

you would know to advise to me?

thank you

 

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I attac one photos