Originally Posted by
Flricordia
http:///forum/post/2656781
Lighting I am sure plays a crutial role in keeping palys and zoas. When theya re under too much light the zooxanthillae algae produces excess oxygen which can act as poison to the host and with not enough light the algae does not produce enough nutrients, but also can produce too much oxygen, though that sounds like it should be the other way around I know. Light intensity goes hand in hand. The wrong lighting can cause not only color changes, but stress which in turn causes the polyp tissure to expell the algae in turn bringing about its death.
Water quality also needs to be kept up. On coral reefs the water is nutrient deficiant. Dirty water is a misnomer as it should really be called-zooplankton enriched, which has nothing to do with nitrate, posphate high parameters. These can both cause the polyp to stress and die.
When first getting polyps it is recommended to place them in a med lit area and work them from there. If you notice small zoanthids ae much more tolerant of lighting conditions than palythoas. It is the palythoas that, though they in turn are more resistant to pests such as nudis, need to be treated with care and not just glued to a cool looking spot and left.
If you notice most of the people that keep the nicest palythoas keep them on plugs so they can be moved easily if needed.
JMO
Thanks for all that info!
I have 2 250w 14K MH bulbs over my 125g with lumenarc refelctors. Any ideas of where zoas should be placed in these conditions?