problems with millaporas

[MitchM]

More information please.

Tank size, how many/which powerheads, describe how the corals are not doing well, are there other corals in the tank, are you using carbon, where are the corals located, have there been any incidents that would have affected them...ect

It's hard to recommend a possible solution without knowing details about your setup.

[Amadod2]

Tank size 75g , 3 powerheads jebao wp40, tunze 6065 and a korelia1150, the other corals are doing well i will post some pics. im not using carbon, only rowaphose, and the corals are located mid tank, i started my tank in august and my first water change was done in december, but the millaporas were ok, i also was using tap water for top offs, now im doing water changes every month 15% and using RODI water for everything

[MitchM]

Your lighting is good, your flow is possibly sufficient, depends on how you have it arranged.
More water flow would be good. Flow is more important than lighting for corals.

I would be concerned that maybe you have some alleopathy (chemical warfare) going on, and with very few water changes plus no carbon, any new corals will have a hard time adapting.
Rowaphos can be hard on sps if you're using too much. How much are you using, and have you always used it?
The pictures might help a bit more.

[Amadod2]

i been using it for three months or so, i never used carbon, is it better??

[sumpfinfishe]

I would also lean to the above replys, i use to keep millis and there a pretty hardy coral, after fragging i would simply stick them into holes in lr and they would grow like weeds. They do like lots of flow as they need lots of calcium, but more importantly to keep there tiny polyps clean of debris such as fine sand or mucus from nearby corals. I found a big difference in lps and sps overall health if my Ca was at 420 or higher, at 400 i found growth rates to be much slower-jmo

[MitchM]

Originally Posted by Amadod2

i been using it for three months or so, i never used carbon, is it better??

Activated carbon and Rowaphos (or any granular ferric oxide product) have different purposes.
Activated carbon will remove organic pollutants and Rowaphos will reduce your phosphate level.

[Amadod2]

what is a good carbon to use and how is it used?