Just need some help with this, I can't get them to grow. The pink, and purple montiporas are doing fine, but there are several green frags at various places around the tank, for many months and they are still just that, frags, almost no growth at all.

low light for green motipora as i have tried dozens and found that the high light was killing them.

all mine are doing well under the t5s

ahem,... i think it's best you put a couple in someone else's tank as a test. my pink's are growing well, dont have any greens though... hint hint... :lol:

My pink, orange, purple, green and yellow are all doing well.

I find the best colour is foung in very high light with very high current. Polyp extension is less in hight current which makes the coral looks brighter. It also grows faster. My experance with these corals. I also find it grows thicker when in higher light and current areas.

Pie

pies i think you have a point about the polyp extension, my monti looks like a furry red stick as i have it in a lower flow area but towards the tips where there is new growth and less polyps it is pinker

Thanks. The green ones I have in high light do not look as good as the ones in lower light, perhaps the green ones do not like as much light as the other ones as Reef said

No frags at present Chimera, I'm still trying to get them to grow, but I'll let you know if it happens.

Strange thing is around maybe 2 years ago I got a frag of green monti from cookie extreme, and it grew incredibly fast, you could see it each day I've never seen another coral grow so fast. Now nothing. Oh well, there are always more mysteries to solve :-?

In terms of polyp extension I have found that acros for example show more polyp extension under 150w than acros under 400w.

I could never work out why my acros never had any great polyp extension during the day. But since seeing tanks that run 150w halides I am sure that acros will show more extension under less light.

Also interesting the corals like acros that have polyp extension during the day in captivity don't exibit this in the wild (Bourneman & Pieman

I have corals under 400s with good daytime polyp extension, yet all corals show great polyp extension during the night.

I have a lime green acro that has awesome polyp extension during the day where its in the shade, and done where it is in the open, yet nighttime extension is the same.

Pie

Also interesting the corals like acros that have polyp extension during the day in captivity don't exibit this in the wild

That is what i have found, that is why most of my acros dont show polyp extention as they must be getting enought light.