Colony Polys receding

[spazz_x]

Hey all, I barely ever post but read all the time. (thanks for all the info!!! it's been a great help!) I've a 90g reef mainly softies with some lps, up for 2 yrs now!. I've been trying to figure out why my colony poly's have been receding... The colony(s) spread quite nicely for the 1st year, held steady for 6 months, and have been slowly receding since. Zoa's have been steadily spreading, leather exanding, mushrooms multiplying, trumpets doubling heads (3 sets), frog spawn tripled in size in 2 months... I'm at a loss. Any ideas?

It seems that my parameter's are fine:

nitrate - 0
nitrite - 0
calcium - 620
ph - 8.2
salinity - 1.024
temp - 79.5
phosphate - 0.1 (a little high)
540w of vho t5 10k/actinic

 

[Ghostbuster]

Hey all, I barely ever post but read all the time. (thanks for all the info!!! it's been a great help!) I've a 90g reef mainly softies with some lps, up for 2 yrs now!. I've been trying to figure out why my colony poly's have been receding... The colony(s) spread quite nicely for the 1st year, held steady for 6 months, and have been slowly receding since. Zoa's have been steadily spreading, leather exanding, mushrooms multiplying, trumpets doubling heads (3 sets), frog spawn tripled in size in 2 months... I'm at a loss. Any ideas?

It seems that my parameter's are fine:

nitrate - 0
nitrite - 0
calcium - 620
ph - 8.2
salinity - 1.024
temp - 79.5
phosphate - 0.1 (a little high)
540w of vho t5 10k/actinic

Calcium should not go over 500 ppm. Alkalinity should be around 8-11 dKH. Have you done any water changes in a while? Phosphates is high as well; usually due to overfeeding. Any photos of the tank?

In my experience, Zoas need the same conditions as SPS to thrive; very stable in every area. A good controller and a calcium reactor does wonders for a tank.

GB

 

[spazz_x]

Thanks for the quick reply Ghostbuster,

I do religious bi-weekly water changes @ 15%. My Alkalinity measures @ 11 dKH. I'll have to try and get some clear pic, they usually come out a little fuzzy.